CVE-2026-53975

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-06. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

OpenChamber 1.11.7 contains an unauthenticated remote code execution vulnerability that allows remote attackers to execute arbitrary shell commands by sending crafted POST requests to the /api/fs/exec endpoint, which passes commands verbatim to Node.js spawn() without any allowlist, blocklist, or argument validation. The authentication middleware becomes a no-op when UI_PASSWORD is not configured, matching the default Docker deployment, enabling attackers to execute arbitrary OS commands as the application user and retrieve full command output including stdout, stderr, and exit code from the server response.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
63%
KEV
Not listed

Published

August 6, 2026

Last Modified

August 6, 2026

Advisory Details (3)

Auto-updated Aug 13, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

OpenChamber 1.11.7 Unauthenticated RCE via /api/fs/exec | Advisories | VulnCheck

https://www.vulncheck.com/advisories/openchamber-unauthenticated-rce-via-api-fs-exec
github_commit

commit f1b9506132fa (openchamber/openchamber)

Fix landed in openchamber/openchamber commit f1b9506132fa — awaiting tagged release

https://github.com/openchamber/openchamber/commit/f1b9506132faf6c564a2694c7f33b94421a49b4a
generic

GitHub - openchamber/openchamber: Desktop and web interface for OpenCode AI agent · GitHub

https://github.com/openchamber/openchamber

Vendor Advisories for CVE-2026-53975(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 52× in last 7d / 104× 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 104 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-53975?
CVE-2026-53975 is a critical vulnerability published on August 6, 2026. OpenChamber 1.11.7 contains an unauthenticated remote code execution vulnerability that allows remote attackers to execute arbitrary shell commands by sending crafted POST requests to the /api/fs/exec endpoint, which passes commands verbatim to Node.js spawn() without any allowlist, blocklist, or…
When was CVE-2026-53975 disclosed?
CVE-2026-53975 was first published in the National Vulnerability Database on August 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53975 actively exploited?
CVE-2026-53975 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 37.4% of all scored CVEs.
What is the CVSS score of CVE-2026-53975?
CVE-2026-53975 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-53975?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53975, 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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