CVE-2026-53790

HIGHPre-NVD 8.18.1
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 8.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6% (48th 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
8.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 8.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
37
EG Risk 37/100

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)
Severity81% × 45%
The EG Score, 8.1 of 10.
Exploitation0.6% × 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 low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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
0.6%
EPSS %ILE
48th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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)14 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 total (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

September 8, 2026

Advisory Details (3)

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

rsync < 3.5.0 Command Injection via Multiple Code Paths | Advisories | VulnCheck

https://www.vulncheck.com/advisories/rsync-command-injection-via-multiple-code-paths
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 advisoryMentions a patch (unverified)

rsync: command / argument injection via unquoted peer- or host-controlled values · Advisory · RsyncProject/rsync · GitHub

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

https://github.com/RsyncProject/rsync/security/advisories/GHSA-5hcf-7xxm-rmqq

Vendor Advisories for CVE-2026-53790(3)

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

Patch Availability(4)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatrsync-0:3.1.3-28.el8_102026-09-30redhat
redhatrhcos-4.22.9.8.202609221802-02026-09-29redhat
redhatrsync-0:3.2.7-1.el9_82026-09-14redhat
redhatrsync-0:3.5.0-3.el10_22026-09-14redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

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.

Additional Vendor Advisories

(3)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 11× in last 7d / 80× 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.

Showing the most recent 100 of 139 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 39 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.6% · 48th 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 0.6% · 48th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  10. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  12. 2026-10-07 02:32 UTCEG score recompute
  13. 2026-10-07 02:32 UTCVendor advisory
  14. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  15. 2026-10-06 13:25 UTCEG score recompute
  16. 2026-10-06 13:25 UTCVendor advisory
  17. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  18. 2026-10-05 14:38 UTCEG score recompute
  19. 2026-10-05 14:38 UTCVendor advisory
  20. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  21. 2026-10-04 22:21 UTCVendor advisory
  22. 2026-10-04 08:56 UTCVendor advisory
  23. 2026-10-03 19:49 UTCEG score recompute
  24. 2026-10-03 19:49 UTCVendor advisory
  25. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.6% · 48th percentile
Show 75 more
  1. 2026-10-02 21:52 UTCEG score recompute
  2. 2026-10-02 21:52 UTCVendor advisory
  3. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  4. 2026-10-02 07:34 UTCEG score recompute
  5. 2026-10-02 07:34 UTCVendor advisory
  6. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  7. 2026-10-01 10:53 UTCVendor advisory
  8. 2026-09-30 21:47 UTCEG score recompute
  9. 2026-09-30 21:47 UTCVendor advisory
  10. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  11. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  12. 2026-09-29 04:05 UTCEG score recompute
  13. 2026-09-29 04:05 UTCVendor advisory
  14. 2026-09-28 13:54 UTCEG score recompute
  15. 2026-09-28 13:54 UTCVendor advisory
  16. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  17. 2026-09-28 00:48 UTCEG score recompute
  18. 2026-09-28 00:48 UTCVendor advisory
  19. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  20. 2026-09-27 09:45 UTCEG score recompute
  21. 2026-09-27 09:45 UTCVendor advisory
  22. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  23. 2026-09-25 03:34 UTCEG score recompute
  24. 2026-09-25 03:34 UTCVendor advisory
  25. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  26. 2026-09-24 09:56 UTCVendor advisory
  27. 2026-09-23 20:50 UTCEG score recompute
  28. 2026-09-23 20:50 UTCVendor advisory
  29. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  30. 2026-09-23 04:39 UTCVendor advisory
  31. 2026-09-22 15:31 UTCEG score recompute
  32. 2026-09-22 15:31 UTCVendor advisory
  33. 2026-09-22 02:22 UTCEG score recompute
  34. 2026-09-22 02:22 UTCVendor advisory
  35. 2026-09-21 13:15 UTCVendor advisory
  36. 2026-09-21 00:09 UTCEG score recompute
  37. 2026-09-21 00:09 UTCVendor advisory
  38. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  39. 2026-09-20 10:09 UTCVendor advisory
  40. 2026-09-19 19:41 UTCEG score recompute
  41. 2026-09-19 19:41 UTCVendor advisory
  42. 2026-09-19 06:07 UTCEG score recompute
  43. 2026-09-19 06:07 UTCVendor advisory
  44. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  45. 2026-09-18 16:53 UTCVendor advisory
  46. 2026-09-18 02:25 UTCEG score recompute
  47. 2026-09-18 02:25 UTCVendor advisory
  48. 2026-09-17 13:19 UTCVendor advisory
  49. 2026-09-17 00:00 UTCEG score recompute
  50. 2026-09-17 00:00 UTCVendor advisory
  51. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  52. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  53. 2026-09-16 02:33 UTCVendor advisory
  54. 2026-09-15 13:27 UTCEG score recompute
  55. 2026-09-15 13:27 UTCVendor advisory
  56. 2026-09-13 22:09 UTCEG score recompute
  57. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  58. 2026-09-12 19:56 UTCEG score recompute
  59. 2026-09-11 17:42 UTCEG score recompute
  60. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  61. 2026-09-10 14:44 UTCEG score recompute
  62. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  63. 2026-09-09 10:04 UTCEG score recompute
  64. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  65. 2026-09-08 20:57 UTCEG score recompute
  66. 2026-09-07 16:33 UTCEG score recompute
  67. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  68. 2026-09-06 19:57 UTCEG score recompute
  69. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  70. 2026-09-05 17:31 UTCEG score recompute
  71. 2026-09-04 14:56 UTCEG score recompute
  72. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  73. 2026-09-02 23:11 UTCEG score recompute
  74. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  75. 2026-09-01 15:12 UTCEG score recompute

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-53790?
CVE-2026-53790 is a high-severity vulnerability; its CVE record was published on August 13, 2026. 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 RSYNCCONNECTPROG environment variable, daemon hooks, the rsync-ssl wrapper, and remote-shell…
When was CVE-2026-53790 made public?
CVE-2026-53790 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 September 8, 2026; the record at its source may have been updated since.
Is CVE-2026-53790 actively exploited?
CVE-2026-53790 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (48th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-53790?
CVE-2026-53790 has a CVSS base score of 8.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-53790?
A fix for CVE-2026-53790 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-53790 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-53790

Explore →

Is Your Infrastructure Affected by CVE-2026-53790?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs