CVE-2026-53804

HIGHPre-NVD 7.27.2—
EchelonGraph scoreMEDIUM confidence

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-08-20. A secondary CVSS source baseline 7.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
7.2EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.5%CVSS: 7.2Exploit: Elevated riskExposed services: Not assessed

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

OTRS Community Edition contains an authenticated OS command injection vulnerability in the PGP encryption module that allows administrators to execute arbitrary operating-system commands by supplying crafted values for the PGP binary path and command options. Administrator-supplied configuration values are concatenated without sanitization into a shell command, enabling arbitrary command execution as the web server process user during normal ticket operations after the malicious configuration is deployed.

CVSS v3
7.2
EG Score
7.2HIGHmedium confidence
EG Risk
48
EG Risk 48/100CISA SSVC

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
Severity72% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
1.5%
EPSS %ILE
73rd
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 20, 2026

Last Modified

September 24, 2026

Advisory Details (2)

Auto-updated Aug 20, 2026
No patch confirmed yet.
generic

OTRS Community Edition OS Command Injection via PGP Configuration | Advisories | VulnCheck

https://www.vulncheck.com/advisories/otrs-community-edition-os-command-injection-via-pgp-configuration
generic

CVE-2026-53804 — OTRS PGP Configuration Command Injection — h00die-gr3y

https://h00die-gr3y.github.io/research/cve-2026-53804/

Vendor Advisories for CVE-2026-53804(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 24× in last 7d / 109× 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.

Showing the most recent 100 of 180 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-53804?
CVE-2026-53804 is a high vulnerability published on August 20, 2026. OTRS Community Edition contains an authenticated OS command injection vulnerability in the PGP encryption module that allows administrators to execute arbitrary operating-system commands by supplying crafted values for the PGP binary path and command options. Administrator-supplied configuration…
When was CVE-2026-53804 disclosed?
CVE-2026-53804 was first published on August 20, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53804 actively exploited?
CVE-2026-53804 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.5% probability of exploitation in the next 30 days (73rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-53804?
CVE-2026-53804 has a CVSS base score of 7.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-53804?
No fix for CVE-2026-53804 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-53804 are linked in the Vendor Advisories panel on this page.

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