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alsa-2026:67463
Vulnerability from osv_almalinux
Published
2026-09-14 00:00
Modified
2026-09-15 08:42
Summary
Important: rsync security, bug fix, and enhancement update
Details
The rsync utility enables the users to copy and synchronize files locally or across a network. Synchronization with rsync is fast because rsync only sends the differences in files over the network instead of sending whole files. The rsync utility is also used as a mirroring tool.
Security Fix(es):
- rsync: rsync 2.3.3 < 3.5.0 Path Traversal via --partial-dir/--backup-dir Symlink (CVE-2026-70460)
- rsync: rsync: TLS Certificate Validation Bypass allows interception of encrypted sessions (CVE-2026-70454)
- rsync: rsync: Arbitrary file deletion via malicious file list (CVE-2026-53789)
- rsync: rsync < 3.5.0 Command Injection via Multiple Code Paths (CVE-2026-53790)
- rsync: rsync: Memory corruption via crafted file entries (CVE-2026-70458)
- rsync: rsync: Denial of Service via handshake stall (CVE-2026-70464)
- rsync: rsync: Local Privilege Escalation via Symlink Following (CVE-2026-53803)
- rsync: rsync: Unauthorized File Access via Symlink Module Root (CVE-2026-53784)
- rsync: rsync: Authorization bypass via
auth usersdirective parsing (CVE-2026-70463) - rsync: rsync 3.1.0 < 3.5.0 Access Control Bypass via DNS Resolution Failure (CVE-2026-70452)
- rsync: rsync < 3.5.0 Daemon IP Spoofing via PROXY Protocol Header (CVE-2026-53791)
- rsync: rsync: Arbitrary file write via --temp-dir or --link-dest options (CVE-2026-53795)
- rsync: rsync: Heap Out-of-Bounds Write via crafted argument list (CVE-2026-70456)
- rsync: rsync < 3.5.0 Path Confinement Bypass via /./ Boundary Marker in Chroot Mode (CVE-2026-53793)
- rsync: rsync: Denial of Service via Algorithmic Complexity (CVE-2026-70453)
- rsync: rsync: Denial of Service via Zstandard compression thread exhaustion (CVE-2026-70455)
- rsync: rsync: Memory corruption via out-of-bounds write in size parsing (CVE-2026-70457)
- rsync: rsync: Information disclosure and denial of service via crafted files-from entry (CVE-2026-70461)
- rsync: rsync: Arbitrary File Read via Symlink Following (CVE-2026-53802)
- rsync: rsync: Arbitrary file write via path traversal in --relative mode (CVE-2026-53785)
- rsync: rsync: Directory escape via TOCTOU race condition in rrsync (CVE-2026-53783)
Bug Fix(es) and Enhancement(s):
- Rebase rsync to version 3.5.0 in AlmaLinux10 (JIRA:AlmaLinux-246094)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
References
{
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"details": "The rsync utility enables the users to copy and synchronize files locally or across a network. Synchronization with rsync is fast because rsync only sends the differences in files over the network instead of sending whole files. The rsync utility is also used as a mirroring tool. \n\nSecurity Fix(es): \n\n * rsync: rsync 2.3.3 \u003c 3.5.0 Path Traversal via --partial-dir/--backup-dir Symlink (CVE-2026-70460)\n * rsync: rsync: TLS Certificate Validation Bypass allows interception of encrypted sessions (CVE-2026-70454)\n * rsync: rsync: Arbitrary file deletion via malicious file list (CVE-2026-53789)\n * rsync: rsync \u003c 3.5.0 Command Injection via Multiple Code Paths (CVE-2026-53790)\n * rsync: rsync: Memory corruption via crafted file entries (CVE-2026-70458)\n * rsync: rsync: Denial of Service via handshake stall (CVE-2026-70464)\n * rsync: rsync: Local Privilege Escalation via Symlink Following (CVE-2026-53803)\n * rsync: rsync: Unauthorized File Access via Symlink Module Root (CVE-2026-53784)\n * rsync: rsync: Authorization bypass via `auth users` directive parsing (CVE-2026-70463)\n * rsync: rsync 3.1.0 \u003c 3.5.0 Access Control Bypass via DNS Resolution Failure (CVE-2026-70452)\n * rsync: rsync \u003c 3.5.0 Daemon IP Spoofing via PROXY Protocol Header (CVE-2026-53791)\n * rsync: rsync: Arbitrary file write via --temp-dir or --link-dest options (CVE-2026-53795)\n * rsync: rsync: Heap Out-of-Bounds Write via crafted argument list (CVE-2026-70456)\n * rsync: rsync \u003c 3.5.0 Path Confinement Bypass via /./ Boundary Marker in Chroot Mode (CVE-2026-53793)\n * rsync: rsync: Denial of Service via Algorithmic Complexity (CVE-2026-70453)\n * rsync: rsync: Denial of Service via Zstandard compression thread exhaustion (CVE-2026-70455)\n * rsync: rsync: Memory corruption via out-of-bounds write in size parsing (CVE-2026-70457)\n * rsync: rsync: Information disclosure and denial of service via crafted files-from entry (CVE-2026-70461)\n * rsync: rsync: Arbitrary File Read via Symlink Following (CVE-2026-53802)\n * rsync: rsync: Arbitrary file write via path traversal in --relative mode (CVE-2026-53785)\n * rsync: rsync: Directory escape via TOCTOU race condition in rrsync (CVE-2026-53783)\n\n\nBug Fix(es) and Enhancement(s): \n\n * Rebase rsync to version 3.5.0 in AlmaLinux10 (JIRA:AlmaLinux-246094)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
"id": "ALSA-2026:67463",
"modified": "2026-09-15T08:42:07Z",
"published": "2026-09-14T00:00:00Z",
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"summary": "Important: rsync security, bug fix, and enhancement update"
}
CVE-2026-53783 (GCVE-0-2026-53783)
Vulnerability from cvelistv5 – Published: 2026-08-13 14:34 – Updated: 2026-08-14 16:50
VLAI
EPSS
VEX
Title
rsync < 3.5.0 TOCTOU Race Condition Directory Escape via rrsync
Summary
rsync before 3.5.0 contains a time-of-check to time-of-use (TOCTOU) race condition vulnerability in the rrsync restricted shell wrapper that allows authenticated clients to escape enforced directory restrictions by substituting a symlink for a path component after validation but before transfer processing. Attackers can additionally leverage unrestricted flags such as --copy-unsafe-links, -D, and --log-file through rrsync to read or write files outside the permitted directory subtree.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 15:41 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/RsyncProject/rsync/security/ad… | vendor-advisory |
| https://github.com/RsyncProject/rsync/releases/ta… | release-notes |
| https://www.vulncheck.com/advisories/rsync-toctou… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| RsyncProject | rsync |
Affected:
0 , ≤ 3.4.4
(semver)
Unaffected: 3.5.0 (semver) cpe:2.3:a:samba:rsync:*:*:*:*:*:*:*:* |
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CVE-2026-53784 (GCVE-0-2026-53784)
Vulnerability from cvelistv5 – Published: 2026-08-13 14:34 – Updated: 2026-08-15 03:17
VLAI
EPSS
VEX
Title
rsync < 3.5.0 Path Traversal via Symlink Module Root
Summary
rsync before 3.5.0 contains a path traversal vulnerability that allows remote clients to access files outside the intended module root when use chroot is disabled and the module root path or a component of it is a symlink. The daemon calls chdir() to the module root at session initialization without resolving symlinks via realpath() or equivalent, causing subsequent relative-path operations to reference files relative to the symlink target rather than the intended module root, enabling unauthorized file access.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-15 03:17 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/RsyncProject/rsync/security/ad… | vendor-advisory |
| https://github.com/RsyncProject/rsync/releases/ta… | release-notes |
| https://www.vulncheck.com/advisories/rsync-path-t… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| RsyncProject | rsync |
Affected:
0 , ≤ 3.4.4
(semver)
Unaffected: 3.5.0 (semver) cpe:2.3:a:samba:rsync:*:*:*:*:*:*:*:* |
Date Public
2026-08-12 00:00
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CVE-2026-53785 (GCVE-0-2026-53785)
Vulnerability from cvelistv5 – Published: 2026-08-13 14:34 – Updated: 2026-08-14 16:50
VLAI
EPSS
VEX
Title
rsync < 3.5.0 Path Traversal Write Escape via --relative Mode
Summary
rsync before 3.5.0 contains a path traversal vulnerability that allows a malicious sender to write files outside the intended destination directory tree by crafting relative paths with symlink components in --relative mode. The make_path() function follows symlinks pointing outside the destination tree while creating intermediate directories without verifying that created paths remain within the destination boundary, enabling arbitrary file writes on the receiver's filesystem.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:27 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/RsyncProject/rsync/security/ad… | vendor-advisory |
| https://github.com/RsyncProject/rsync/releases/ta… | release-notes |
| https://www.vulncheck.com/advisories/rsync-path-t… | third-party-advisory |
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1 product
| Vendor | Product | Version | |
|---|---|---|---|
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Affected:
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CVE-2026-53789 (GCVE-0-2026-53789)
Vulnerability from cvelistv5 – Published: 2026-08-13 14:37 – Updated: 2026-08-15 03:18
VLAI
EPSS
VEX
Title
rsync < 3.5.0 Arbitrary File Deletion via Malicious File List
Summary
rsync before 3.5.0 contains an improper path handling vulnerability that allows a malicious sender to expand the scope of --delete operations beyond the intended destination subtree by sending a crafted file list that causes rsync to reclassify implied parent directory entries or treat synthetic paths as the transfer root. Attackers can exploit multiple variants including implied parent reclassification, synthetic root path construction, legacy protocol behavior below version 30, and non-directory root handling to cause the receiver to delete files outside the authorized destination directory.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-15 03:18 UTC
CWE
- CWE-807 - Reliance on Untrusted Inputs in a Security Decision
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/RsyncProject/rsync/security/ad… | vendor-advisory |
| https://github.com/RsyncProject/rsync/releases/ta… | release-notes |
| https://www.vulncheck.com/advisories/rsync-arbitr… | third-party-advisory |
Impacted products
1 product
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|---|---|---|---|
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Affected:
0 , ≤ 3.4.4
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Date Public
2026-08-12 00:00
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CVE-2026-53790 (GCVE-0-2026-53790)
Vulnerability from cvelistv5 – Published: 2026-08-13 14:37 – Updated: 2026-08-14 16:50
VLAI
EPSS
VEX
Title
rsync < 3.5.0 Command Injection via Multiple Code Paths
Summary
rsync before 3.5.0 contains multiple command and argument injection vulnerabilities that allow attackers to execute arbitrary commands by supplying malicious input through several code paths, including the RSYNC_CONNECT_PROG environment variable, daemon hooks, the rsync-ssl wrapper, and remote-shell command newline injection. Attackers can inject shell metacharacters or newline characters into unsanitized user-supplied values such as hostnames and hostspecs to execute arbitrary commands under the privileges of the rsync process or the invoking user.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:33 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/RsyncProject/rsync/security/ad… | vendor-advisory |
| https://github.com/RsyncProject/rsync/releases/ta… | release-notes |
| https://www.vulncheck.com/advisories/rsync-comman… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
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Affected:
0 , ≤ 3.4.4
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Date Public
2026-08-12 00:00
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CVE-2026-53791 (GCVE-0-2026-53791)
Vulnerability from cvelistv5 – Published: 2026-08-13 14:38 – Updated: 2026-08-14 18:09
VLAI
EPSS
VEX
Title
rsync < 3.5.0 Daemon IP Spoofing via PROXY Protocol Header
Summary
rsync daemon before 3.5.0 contains an IP address spoofing vulnerability that allows unauthenticated remote attackers to bypass IP-based access controls by sending a crafted PROXY protocol header with a forged source address. Attackers who can connect directly to the rsync daemon can inject a spoofed source IP in the PROXY protocol header to circumvent hosts allow/deny rules, gaining unauthorized access that would otherwise be blocked based on their real source address.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 18:02 UTC
CWE
- CWE-290 - Authentication Bypass by Spoofing
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/RsyncProject/rsync/security/ad… | vendor-advisory |
| https://github.com/RsyncProject/rsync/releases/ta… | release-notes |
| https://www.vulncheck.com/advisories/rsync-daemon… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| RsyncProject | rsync |
Affected:
0 , ≤ 3.4.4
(semver)
Unaffected: 3.5.0 (semver) cpe:2.3:a:samba:rsync:*:*:*:*:*:*:*:* |
Date Public
2026-08-12 00:00
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CVE-2026-53793 (GCVE-0-2026-53793)
Vulnerability from cvelistv5 – Published: 2026-08-13 14:38 – Updated: 2026-08-14 16:50
VLAI
EPSS
VEX
Title
rsync < 3.5.0 Path Confinement Bypass via /./ Boundary Marker in Chroot Mode
Summary
rsync before 3.5.0 contains a path confinement bypass vulnerability that allows remote clients to escape the intended inner-module root confinement by constructing paths that resolve outside the chroot boundary when the module root contains a /./ boundary marker. Attackers can exploit improper handling of the /./ notation or forge delta-basis transfers referencing xname paths that cross the /./ boundary to gain unauthorized read or write access to files outside the module's subtree.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 15:54 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
3 references
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|---|---|
| https://github.com/RsyncProject/rsync/security/ad… | vendor-advisory |
| https://github.com/RsyncProject/rsync/releases/ta… | release-notes |
| https://www.vulncheck.com/advisories/rsync-path-c… | third-party-advisory |
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1 product
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Affected:
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CVE-2026-53795 (GCVE-0-2026-53795)
Vulnerability from cvelistv5 – Published: 2026-08-13 14:39 – Updated: 2026-08-14 20:18
VLAI
EPSS
VEX
Title
rsync < 3.5.0 Arbitrary File Write via --temp-dir/--link-dest
Summary
rsync before 3.5.0 contains an arbitrary file write vulnerability that allows attackers to write files outside the intended destination tree by specifying an absolute path via --temp-dir or --link-dest options. The rename-confinement logic is bypassed when these options resolve to paths outside the destination tree, enabling attacker-controlled values to write files to arbitrary locations accessible to the rsync process.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 19:16 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
3 references
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|---|---|
| https://github.com/RsyncProject/rsync/security/ad… | vendor-advisory |
| https://github.com/RsyncProject/rsync/releases/ta… | release-notes |
| https://www.vulncheck.com/advisories/rsync-arbitr… | third-party-advisory |
Impacted products
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Affected:
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CVE-2026-53802 (GCVE-0-2026-53802)
Vulnerability from cvelistv5 – Published: 2026-08-13 14:32 – Updated: 2026-08-14 16:50
VLAI
EPSS
VEX
Title
rsync < 3.5.0 Arbitrary File Read via Symlink Following
Summary
rsync before 3.5.0 contains an arbitrary file read vulnerability that allows attackers to read files accessible to the rsync daemon process by exploiting symlink following in input configuration file handling including --files-from, --password-file, and filter merge files. Attackers can place a symlink at a predictable --files-from or --password-file path, or supply a --files-from path that escapes the daemon module root, to read arbitrary files accessible to the rsync process.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 15:23 UTC
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/RsyncProject/rsync/security/ad… | vendor-advisory |
| https://github.com/RsyncProject/rsync/releases/ta… | release-notes |
| https://www.vulncheck.com/advisories/rsync-arbitr… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| RsyncProject | rsync |
Affected:
0 , ≤ 3.4.4
(semver)
Unaffected: 3.5.0 (semver) cpe:2.3:a:samba:rsync:*:*:*:*:*:*:*:* |
Date Public
2026-08-12 00:00
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CVE-2026-53803 (GCVE-0-2026-53803)
Vulnerability from cvelistv5 – Published: 2026-08-13 14:33 – Updated: 2026-08-14 16:50
VLAI
EPSS
VEX
Title
rsync < 3.5.0 Symlink Following Arbitrary File Overwrite
Summary
rsync before 3.5.0 contains a symlink following vulnerability that allows local attackers to overwrite arbitrary files by placing a symlink at a predictable output path such as --log-file, --write-batch, or daemon-mode log and statistics paths. Attackers can exploit rsync's failure to reject symlinks during ancillary file writes to redirect output to arbitrary filesystem locations, achieving local privilege escalation on installations where rsync runs with elevated privileges such as setuid or privileged daemon configurations.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 03:55 UTC
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/RsyncProject/rsync/security/ad… | vendor-advisory |
| https://github.com/RsyncProject/rsync/releases/ta… | release-notes |
| https://www.vulncheck.com/advisories/rsync-symlin… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
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Affected:
0 , ≤ 3.4.4
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Date Public
2026-08-12 00:00
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Loading…
Trend slope:
-
(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.
Loading…
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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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