CVE-2026-53797

MEDIUMPre-NVD 4.74.7
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This medium-severity CVE scores 4.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1% (1st percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
4.7EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 4.7Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

rsync before 3.5.0 contains a symlink race condition vulnerability in the sender's source tree traversal that allows an attacker who can manipulate a parent directory of the source tree to redirect file reads to unintended paths. Attackers can atomically replace a parent directory component with a symlink pointing outside the source root between path resolution and file open operations to disclose file contents outside the intended transfer root.

CVSS v3
4.7
EG Score
4.7MEDIUMmedium confidence
EG Risk
21
EG Risk 21/100

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 (value × EchelonGraph’s weight)
Severity47% × 45%
The EG Score, 4.7 of 10.
Exploitation0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
1st
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 13, 2026

Last Modified

August 31, 2026

Advisory Details (3)

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

rsync < 3.5.0 Symlink Race Condition Information Disclosure | Advisories | VulnCheck

https://www.vulncheck.com/advisories/rsync-symlink-race-condition-information-disclosure
GitHub advisoryMentions a patch (unverified)

rsync: sender source-tree parent-component symlink race -> out-of-tree disclosure · Advisory · RsyncProject/rsync · GitHub

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

https://github.com/RsyncProject/rsync/security/advisories/GHSA-3jj3-qvc7-jp6x
GitHub release Patch Available

v3.5.0

Patch available: RsyncProject/rsync v3.5.0

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

Vendor Advisories for CVE-2026-53797(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(7 across 7 ecosystems)
Alpine:v3.21(1)
PackageVulnerable rangeFix by version rangeDependents
rsync—
  • every version up to 3.5.0-r0: fixed in 3.5.0-r0
—
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
rsync—
  • every version up to 3.5.0-r0: fixed in 3.5.0-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
rsync—
  • every version up to 3.5.0-r0: fixed in 3.5.0-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
rsync—
  • every version up to 3.5.0-r0: fixed in 3.5.0-r0
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
rsync3.2.7-1 ... 3.5.1+ds1-1 (32 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
rsync3.4.1+ds1-5 ... 3.4.4+ds1-1 (13 versions)
  • every version up to 3.5.0+ds1-0+deb13u1: fixed in 3.5.0+ds1-0+deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
rsync3.4.1+ds1-5 ... 3.4.4+ds1-1 (9 versions)
  • every version up to 3.5.0+ds1-1: fixed in 3.5.0+ds1-1
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 45× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  3. 2026-10-12 15:57 UTCEG score recompute
  4. 2026-10-11 19:40 UTCEG score recompute
  5. 2026-10-11 16:55 UTCEG score recompute
  6. 2026-10-11 14:18 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  10. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  12. 2026-10-06 18:00 UTCEG score recompute
  13. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  14. 2026-10-05 20:11 UTCEG score recompute
  15. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  16. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  17. 2026-10-03 19:49 UTCEG score recompute
  18. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  19. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  20. 2026-10-02 07:34 UTCEG score recompute
  21. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  22. 2026-09-30 21:47 UTCEG score recompute
  23. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  24. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  25. 2026-09-29 05:23 UTCEG score recompute
Show 72 more
  1. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  2. 2026-09-28 07:34 UTCEG score recompute
  3. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  4. 2026-09-27 09:45 UTCEG score recompute
  5. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  6. 2026-09-25 03:33 UTCEG score recompute
  7. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  8. 2026-09-23 20:50 UTCEG score recompute
  9. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  10. 2026-09-22 21:01 UTCEG score recompute
  11. 2026-09-21 19:56 UTCEG score recompute
  12. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  13. 2026-09-19 19:58 UTCEG score recompute
  14. 2026-09-18 22:08 UTCEG score recompute
  15. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  16. 2026-09-17 22:18 UTCEG score recompute
  17. 2026-09-17 00:00 UTCEG score recompute
  18. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  19. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  20. 2026-09-15 20:08 UTCEG score recompute
  21. 2026-09-13 19:34 UTCEG score recompute
  22. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  23. 2026-09-11 23:55 UTCEG score recompute
  24. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  25. 2026-09-11 00:56 UTCEG score recompute
  26. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  27. 2026-09-09 04:58 UTCEG score recompute
  28. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  29. 2026-09-07 18:01 UTCEG score recompute
  30. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  31. 2026-09-06 20:12 UTCEG score recompute
  32. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  33. 2026-09-05 22:23 UTCEG score recompute
  34. 2026-09-05 00:32 UTCEG score recompute
  35. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  36. 2026-09-02 23:11 UTCEG score recompute
  37. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  38. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  39. 2026-09-01 13:30 UTCEG score recompute
  40. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  41. 2026-08-31 06:48 UTCEG score recompute
  42. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  43. 2026-08-30 08:58 UTCEG score recompute
  44. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  45. 2026-08-29 11:08 UTCEG score recompute
  46. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  47. 2026-08-27 15:16 UTCEG score recompute
  48. 2026-08-27 14:25 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  49. 2026-08-26 17:26 UTCEG score recompute
  50. 2026-08-25 15:08 UTCEG score recompute
  51. 2026-08-25 13:49 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  52. 2026-08-24 17:16 UTCEG score recompute
  53. 2026-08-23 19:27 UTCEG score recompute
  54. 2026-08-23 00:19 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  55. 2026-08-22 21:38 UTCEG score recompute
  56. 2026-08-21 23:49 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  57. 2026-08-21 02:00 UTCEG score recompute
  58. 2026-08-20 22:55 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  59. 2026-08-20 04:10 UTCEG score recompute
  60. 2026-08-19 17:04 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  61. 2026-08-18 08:31 UTCEG score recompute
  62. 2026-08-17 13:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  63. 2026-08-16 12:46 UTCEG score recompute
  64. 2026-08-16 02:14 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  65. 2026-08-15 14:57 UTCEG score recompute
  66. 2026-08-15 01:30 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  67. 2026-08-14 13:14 UTCEG score recompute
  68. 2026-08-13 18:18 UTCEG score recompute
  69. 2026-08-13 17:47 UTCEG score recompute
  70. 2026-08-13 15:23 UTCEG score recompute
  71. 2026-08-13 15:12 UTCEG score recomputeFirst assessed: 4.7 MEDIUM
  72. 2026-08-13 15:11 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-53797?
CVE-2026-53797 is a medium-severity vulnerability; its CVE record was published on August 13, 2026. rsync before 3.5.0 contains a symlink race condition vulnerability in the sender's source tree traversal that allows an attacker who can manipulate a parent directory of the source tree to redirect file reads to unintended paths. Attackers can atomically replace a parent directory component with a…
When was CVE-2026-53797 made public?
CVE-2026-53797 was made public on August 12, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on August 13, 2026. EchelonGraph's copy of the record carries a last-modified date of August 31, 2026; the record at its source may have been updated since.
Is CVE-2026-53797 actively exploited?
CVE-2026-53797 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-53797?
CVE-2026-53797 has a CVSS base score of 4.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-53797?
A fix for CVE-2026-53797 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-53797 are linked in the Vendor Advisories panel on this page.

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