CVE-2026-53796

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 97% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.3Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

rsync before 3.5.0 contains a time-of-check to time-of-use (TOCTOU) race condition vulnerability in the non-daemon receiver's destination directory handling that allows an attacker who can manipulate destination path parent components to redirect file writes to unintended locations. Attackers can substitute a symlink for a component of the destination path between the path resolution and chdir() call, causing the receiver's working directory to be established outside the intended destination tree so that subsequent relative-path file writes land in unintended filesystem locations.

CVSS v3
6.3
EG Score
6.3(medium)
EG Risk
28(Track)
EG Risk 28/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity63% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

August 13, 2026

Last Modified

September 8, 2026

Advisory Details (3)

Auto-updated Aug 13, 2026
Patch available. Sources: github_release, github.
generic

rsync < 3.5.0 TOCTOU Race Condition via Destination Directory Handling | Advisories | VulnCheck

https://www.vulncheck.com/advisories/rsync-toctou-race-condition-via-destination-directory-handling
github_release Patch Available

v3.5.0

Patch available: RsyncProject/rsync v3.5.0

https://github.com/RsyncProject/rsync/releases/tag/v3.5.0
github Patch Available

rsync: non-daemon receiver destination-chdir symlink race (TOCTOU) · Advisory · RsyncProject/rsync · GitHub

Affected: 3.5.0. (Precise introduced-in ranges being finalised.)

https://github.com/RsyncProject/rsync/security/advisories/GHSA-w75h-ccff-w53m

Affected Packages

(7 across 7 ecosystems)
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
rsync—3.5.0-r0—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
rsync—3.5.0-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
rsync—3.5.0-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
rsync—3.5.0-r0—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
rsync3.2.7-1 ... 3.5.0+ds1-2 (30 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
rsync3.4.1+ds1-5 ... 3.5.0+ds1-2 (15 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
rsync3.4.1+ds1-5 ... 3.4.4+ds1-1 (9 versions)3.5.0+ds1-1—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 43× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-19 05:52 UTCEG score recompute
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 07:21 UTCEG score recompute
  4. 2026-09-17 08:57 UTCEG score recompute
  5. 2026-09-16 14:08 UTCEPSS rescore
  6. 2026-09-15 09:59 UTCEG score recompute
  7. 2026-09-14 11:30 UTCEG score recompute
  8. 2026-09-13 16:47 UTCEPSS rescore
  9. 2026-09-13 13:06 UTCEG score recompute
  10. 2026-09-11 16:17 UTCEG score recompute
  11. 2026-09-10 17:46 UTCEG score recompute
  12. 2026-09-10 09:35 UTCEPSS rescore
  13. 2026-09-09 19:22 UTCEG score recompute
  14. 2026-09-08 22:01 UTCEPSS rescore
  15. 2026-09-07 19:53 UTCEG score recompute
  16. 2026-09-07 16:01 UTCEPSS rescore
  17. 2026-09-06 21:29 UTCEG score recompute
  18. 2026-09-06 13:47 UTCEPSS rescore
  19. 2026-09-05 00:32 UTCEG score recompute
  20. 2026-09-04 05:06 UTCEPSS rescore
  21. 2026-09-03 01:02 UTCEG score recompute
  22. 2026-09-02 14:12 UTCEPSS rescore
  23. 2026-09-02 01:50 UTCEG score recompute
  24. 2026-09-01 13:54 UTCEPSS rescore
  25. 2026-09-01 04:40 UTCEPSS rescore
Show 33 more
  1. 2026-08-31 04:33 UTCEG score recompute
  2. 2026-08-30 19:17 UTCEPSS rescore
  3. 2026-08-30 06:09 UTCEG score recompute
  4. 2026-08-30 01:22 UTCEPSS rescore
  5. 2026-08-29 07:41 UTCEG score recompute
  6. 2026-08-28 21:41 UTCEPSS rescore
  7. 2026-08-27 19:33 UTCEG score recompute
  8. 2026-08-27 14:25 UTCEPSS rescore
  9. 2026-08-26 20:12 UTCEG score recompute
  10. 2026-08-26 14:46 UTCEPSS rescore
  11. 2026-08-25 21:46 UTCEG score recompute
  12. 2026-08-25 13:49 UTCEPSS rescore
  13. 2026-08-24 23:01 UTCEG score recompute
  14. 2026-08-23 02:12 UTCEG score recompute
  15. 2026-08-23 00:19 UTCEPSS rescore
  16. 2026-08-22 03:47 UTCEG score recompute
  17. 2026-08-21 23:49 UTCEPSS rescore
  18. 2026-08-21 05:23 UTCEG score recompute
  19. 2026-08-20 22:55 UTCEPSS rescore
  20. 2026-08-18 10:09 UTCEG score recompute
  21. 2026-08-17 13:47 UTCEPSS rescore
  22. 2026-08-17 11:44 UTCEG score recompute
  23. 2026-08-16 14:56 UTCEPSS rescore
  24. 2026-08-16 13:20 UTCEG score recompute
  25. 2026-08-16 02:14 UTCEPSS rescore
  26. 2026-08-15 14:56 UTCEG score recompute
  27. 2026-08-15 01:30 UTCEPSS rescore
  28. 2026-08-14 16:32 UTCEG score recompute
  29. 2026-08-14 16:04 UTCEG score recompute
  30. 2026-08-14 13:14 UTCEG score recompute
  31. 2026-08-13 15:23 UTCEG score recompute
  32. 2026-08-13 15:12 UTCEG score recompute
  33. 2026-08-13 15:11 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-53796?
CVE-2026-53796 is a medium vulnerability published on August 13, 2026. rsync before 3.5.0 contains a time-of-check to time-of-use (TOCTOU) race condition vulnerability in the non-daemon receiver's destination directory handling that allows an attacker who can manipulate destination path parent components to redirect file writes to unintended locations. Attackers can…
When was CVE-2026-53796 disclosed?
CVE-2026-53796 was first published in the National Vulnerability Database on August 13, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53796 actively exploited?
CVE-2026-53796 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 96.8% of all scored CVEs.
What is the CVSS score of CVE-2026-53796?
CVE-2026-53796 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-53796?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53796, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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