Common Weakness Enumeration
CWE-405
Allowed-with-ReviewAsymmetric Resource Consumption (Amplification)
Abstraction: Class · Status: Incomplete
The product does not properly control situations in which an adversary can cause the product to consume or produce excessive resources without requiring the adversary to invest equivalent work or otherwise prove authorization, i.e., the adversary's influence is "asymmetric."
130 vulnerabilities reference this CWE, most recent first.
CVE-2026-110676 (GCVE-0-2026-110676)
Vulnerability from cvelistv5 – Published: 2026-10-19 18:11 – Updated: 2026-10-19 18:11
VLAI
EPSS
VEX
Title
Cpanel::JSON::XS versions before 4.80 for Perl allow memory exhaustion by encoding exponent notation as full decimal digits under allow_bignum
Summary
Cpanel::JSON::XS versions before 4.80 for Perl allow memory exhaustion by encoding exponent notation as full decimal digits under allow_bignum.
With allow_bignum, a JSON number with a fraction or exponent decodes to a Math::BigFloat, which stores the exponent separately and so decodes cheaply. Encoding it untyped or as JSON_TYPE_FLOAT writes the plain decimal form with one digit per unit of exponent. Nothing bounds the exponent, so the 12-byte text [1e30000000] encodes to 30 MB.
Untrusted JSON decoded with allow_bignum and encoded again can exhaust memory and CPU.
Severity
No CVSS data available.
CWE
- CWE-405 - Asymmetric Resource Consumption (Amplification)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/rurban/Cpanel-JSON-XS/commit/9… | patch |
| https://metacpan.org/release/RURBAN/Cpanel-JSON-X… | release-notes |
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CVE-2026-109932 (GCVE-0-2026-109932)
Vulnerability from cvelistv5 – Published: 2026-10-15 18:44 – Updated: 2026-10-16 20:00
VLAI
EPSS
VEX
Title
undici WebSocket client vulnerable to Denial of Service via unbounded automatic PONG buffering
Summary
undici is an HTTP client library for Node.js. In versions 5.15.0 through 6.29.0, 7.0.0 through 7.30.0, and 8.0.0 through 8.12.1, its WebSocket client, including the bundled WebSocket exposed by Node.js, can be driven to exhaust process memory by a malicious or compromised WebSocket server. For every PING frame received, the client automatically writes a PONG response and ignores the backpressure signal from the socket write, so a server that streams small PING frames while never reading the client's PONGs makes the outbound write queue and heap grow without bound until the Node.js process runs out of memory and terminates. The attack is remote and unauthenticated, needs only a normal WebSocket connection, and is asymmetric, since small inbound PINGs produce a much larger retained outbound queue, with availability the only impact. The issue is fixed in undici 6.29.1, 7.30.1, and 8.12.2, which pause WebSocket frame parsing when the automatic PONG response hits socket backpressure and resume on drain, bounding the outbound queue, and users should upgrade to one of those versions or later. There is no workaround.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 20:00 UTC
CWE
Assigner
References
Impacted products
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CVE-2026-104817 (GCVE-0-2026-104817)
Vulnerability from cvelistv5 – Published: 2026-10-13 18:39 – Updated: 2026-10-13 19:04
VLAI
EPSS
VEX
Title
Misskey: Lack of rate limiting and size restrictions in RSS fetching API
Summary
Misskey is an open source, federated social media platform. From 12.112.1 until 2026.7.0, the unauthenticated fetch-rss API lacks rate limiting and response-size restrictions and performs synchronous XML parsing. An attacker can trigger unbounded outbound HTTP requests and synchronous parsing, exhausting instance resources, amplifying requests toward third-party servers, or probing network-reachable services even when federation is disabled. This issue is fixed in version 2026.7.0.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 19:03 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/misskey-dev/misskey/security/a… | x_refsource_CONFIRM |
| https://github.com/misskey-dev/misskey/commit/a12… | x_refsource_MISC |
| https://github.com/misskey-dev/misskey/releases/t… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| misskey-dev | misskey |
Affected:
>= 12.0.0, <= 13.14.2
Affected: >= 2023.9.0-beta.1, < 2026.7.0 |
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CVE-2026-104712 (GCVE-0-2026-104712)
Vulnerability from cvelistv5 – Published: 2026-10-05 18:35 – Updated: 2026-10-06 14:10
VLAI
EPSS
VEX
Title
Apache Struts: Disproportionate response size when rendering BigDecimal request parameters
Summary
Asymmetric resource consumption (amplification) vulnerability in Apache Struts. When a request parameter is bound to an arbitrary-precision decimal (java.math.BigDecimal) property that is then rendered through the Struts tag library, the framework can produce a response many orders of magnitude larger than the request, allowing an unauthenticated remote attacker to exhaust server CPU and outbound network capacity with sustained low-volume traffic. Applications that do not bind request parameters to BigDecimal properties, or never render such a property through the Struts tag library, are not affected.
This issue affects Apache Struts: from 2.5.14 through 2.5.33, from 6.0.0 through 6.11.0, from 7.0.0 through 7.3.0.
Users are recommended to upgrade to version 6.12.0 or 7.4.0, which fixes the issue.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 14:09 UTC
CWE
- CWE-405 - Asymmetric Resource Consumption (Amplification)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://cwiki.apache.org/confluence/display/WW/S2-076 | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/1… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Struts |
Affected:
2.5.14 , ≤ 2.5.33
(semver)
Affected: 6.0.0 , ≤ 6.11.0 (semver) Affected: 7.0.0 , ≤ 7.3.0 (semver) |
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CVE-2026-104431 (GCVE-0-2026-104431)
Vulnerability from cvelistv5 – Published: 2026-10-02 11:38 – Updated: 2026-10-02 14:53
VLAI
EPSS
VEX
Title
Zebra before 6.0.0 Denial of Service via Synchronous Script FFI Verification
Summary
Zebra before 6.0.0 contains a denial of service vulnerability that allows unauthenticated peers to stall Tokio workers by submitting mempool transactions requiring expensive synchronous script verification. Attackers can send non-standard high-sigop P2SH transactions that reach CachedFfiTransaction::is_valid() before standardness checks, saturating the verifier buffer and rendering the node unresponsive.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 14:53 UTC
CWE
- CWE-405 - Asymmetric Resource Consumption (Amplification)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/ZcashFoundation/zebra/security… | vendor-advisory |
| https://www.vulncheck.com/advisories/zebra-before… | third-party-advisory |
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1 product
| Vendor | Product | Version | |
|---|---|---|---|
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Affected:
0 , < 6.0.0
(semver)
Unaffected: 6.0.0 (semver) cpe:2.3:a:zfnd:zebra:*:*:*:*:*:*:*:* |
Date Public
2026-07-13 00:00
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CVE-2026-104425 (GCVE-0-2026-104425)
Vulnerability from cvelistv5 – Published: 2026-10-02 11:38 – Updated: 2026-10-02 15:35
VLAI
EPSS
VEX
Title
Zebra before 6.1.0 Batch-Verification Poisoning DoS via Unattributed Pushed Transactions
Summary
ZcashFoundation Zebra before 6.1.0 contains a resource exhaustion vulnerability that allows unauthenticated peers to degrade block processing by pushing transactions with invalid Orchard proofs without being misbehavior-scored. Attackers can repeatedly push invalid proofs into the shared halo2 batch verifier, forcing honest block proofs onto the slow individual-verification path and slowing block processing roughly sevenfold.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 15:34 UTC
CWE
- CWE-405 - Asymmetric Resource Consumption (Amplification)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/ZcashFoundation/zebra/security… | vendor-advisory |
| https://www.vulncheck.com/advisories/zebra-before… | third-party-advisory |
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1 product
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Affected:
0 , < 6.1.0
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Date Public
2026-07-17 00:00
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CVE-2026-104423 (GCVE-0-2026-104423)
Vulnerability from cvelistv5 – Published: 2026-10-02 11:38 – Updated: 2026-10-02 15:55
VLAI
EPSS
VEX
Title
Zebra before 6.2.1 Denial of Service via Uncapped V6 Shielded Proof Verification
Summary
Zebra (zebrad) before 6.2.1 contains an asymmetric resource consumption vulnerability that allows unauthenticated peers to stall block verification by pushing V6 mempool transactions with invalid Halo2 proofs. Attackers can flood the shared unprioritized Halo2 verification queue with zero-fee transactions carrying zero-filled Orchard and Ironwood proofs, causing nodes to fall behind the chain tip.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 15:55 UTC
CWE
- CWE-405 - Asymmetric Resource Consumption (Amplification)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/ZcashFoundation/zebra/security… | vendor-advisory |
| https://www.vulncheck.com/advisories/zebra-before… | third-party-advisory |
Impacted products
1 product
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|---|---|---|---|
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Affected:
0 , < 6.2.1
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Date Public
2026-08-17 00:00
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CVE-2026-103880 (GCVE-0-2026-103880)
Vulnerability from cvelistv5 – Published: 2026-10-02 10:03 – Updated: 2026-10-05 18:47
VLAI
EPSS
VEX
Title
Apache Directory LDAP API: Denial of service via excessive bcrypt cost factor in stored passwords
Summary
Asymmetric Resource Consumption vulnerability in Apache Directory LDAP API.
Storing a password using the bcrypt algorithm with a high force like 30 in a LDAP server that supports this algorithm will cause the server CPU to run for hours checking the credentials. A bounded cost should be enforced to avoid a server DOS.
This issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9.
Users are recommended to upgrade to version 2.1.9, which fixes the issue.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-05 18:46 UTC
CWE
- CWE-405 - Asymmetric Resource Consumption (Amplification)
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Directory LDAP API |
Affected:
2.1.0 , < 2.1.9
(semver)
|
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CVE-2026-96960 (GCVE-0-2026-96960)
Vulnerability from cvelistv5 – Published: 2026-10-13 19:01 – Updated: 2026-10-23 22:31
VLAI
EPSS
VEX
Title
.NET Denial of Service Vulnerability
Summary
Asymmetric resource consumption (amplification) in .NET allows an unauthorized attacker to deny service over a network.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 19:37 UTC
CWE
- CWE-405 - Asymmetric Resource Consumption (Amplification)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft .NET Framework 3.5 |
Affected:
3.5.0 , < 2.0.50727.9188 AND 3.0.30729.9171
(custom)
|
|
| Microsoft | Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 |
Affected:
3.0.0.0 , < 2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0
(custom)
|
|
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 |
Affected:
4.7.0 , < 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0
(custom)
|
|
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 |
Affected:
4.8.0 , < 2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0
(custom)
|
|
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 |
Affected:
4.8.1 , < 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0
(custom)
|
|
| Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 |
Affected:
4.7.0 , < 4.7.4150.0
(custom)
|
|
| Microsoft | Microsoft .NET Framework 4.8 |
Affected:
4.8.0 , < 4.8.4811.0
(custom)
|
|
| Microsoft | Microsoft .NET Framework 4.8.1 |
Affected:
4.8.0.0 , < 4.8.9363.0
(custom)
|
|
| Microsoft | System.Security.Cryptography.Xml |
Affected:
10.0.0 , < 10.0.13
(custom)
|
Date Public
2026-10-13 14:00
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CVE-2026-87011 (GCVE-0-2026-87011)
Vulnerability from cvelistv5 – Published: 2026-09-09 20:54 – Updated: 2026-09-14 13:42
VLAI
EPSS
VEX
Title
Open WebUI: Unauthenticated requests can stall the server via uncached OIDC fetches in back-channel logout
Summary
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.1, the unauthenticated POST /oauth/backchannel-logout handler in backend/open_webui/utils/oauth.py fetched the OIDC discovery document and signing keys before validating a submitted logout token. Each request repeated uncached network fetches, and the signing-key lookup blocked the async event loop, so requests carrying invalid tokens could stall the single-worker instance and amplify traffic to the identity provider when ENABLE_OAUTH_BACKCHANNEL_LOGOUT was enabled. This issue is fixed in version 0.11.1.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-14 13:41 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/open-webui/open-webui/security… | x_refsource_CONFIRM |
| https://github.com/open-webui/open-webui/commit/a… | x_refsource_MISC |
| https://github.com/open-webui/open-webui/releases… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| open-webui | open-webui |
Affected:
>= 0.9.0, < 0.11.1
|
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Mitigation
Architecture and Design
An application must make resources available to a client commensurate with the client's access level.
Mitigation
Architecture and Design
An application must, at all times, keep track of allocated resources and meter their usage appropriately.
Mitigation
System Configuration
Consider disabling resource-intensive algorithms on the server side, such as Diffie-Hellman key exchange.
No CAPEC attack patterns related to this CWE.