CVE-2026-65986

HIGHPre-NVD 8.58.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 85% 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
8.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.5Exploit: None knownExposed: 0

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

CVAT is an open source interactive video and image annotation tool for computer vision. Versions 2.5.0 through 2.66.0 contain a XSS vulnerability that can be accessed through annotation guide assets. When CVAT serves the files attached to an annotation guide, it labels them with a media type ( Content-Type ) that the attacker can influence, so instead of treating an uploaded file as plain data, the victim's browser can be told to treat it as an HTML page and run any JavaScript inside it. This issue has been fixed in version 2.67.0.

CVSS v3
8.5
EG Score
8.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity85% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

August 4, 2026

Last Modified

August 5, 2026

Advisory Details (2)

Auto-updated Aug 4, 2026
Patch available. Sources: github, github_commit.
github_commit Patch Available

commit 44d717ad3a9d (cvat-ai/cvat)

Patch available: cvat-ai/cvat v2.67.0 (contains commit 44d717ad3a9d)

https://github.com/cvat-ai/cvat/commit/44d717ad3a9d914f1cb2593ce09efd87d0b9159e
github Patch Available

Stored XSS via annotation guide assets · Advisory · cvat-ai/cvat · GitHub

https://github.com/cvat-ai/cvat/security/advisories/GHSA-w6mx-95ff-72cv

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 46× 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. 2026-08-29 21:44 UTCEG score recompute
  2. 2026-08-28 21:42 UTCEPSS rescore
  3. 2026-08-27 21:05 UTCEG score recompute
  4. 2026-08-26 19:09 UTCEG score recompute
  5. 2026-08-26 14:47 UTCEPSS rescore
  6. 2026-08-25 16:08 UTCEG score recompute
  7. 2026-08-25 13:49 UTCEPSS rescore
  8. 2026-08-24 14:28 UTCEG score recompute
  9. 2026-08-23 12:43 UTCEG score recompute
  10. 2026-08-23 00:19 UTCEPSS rescore
  11. 2026-08-22 11:04 UTCEG score recompute
  12. 2026-08-21 23:49 UTCEPSS rescore
  13. 2026-08-21 09:24 UTCEG score recompute
  14. 2026-08-20 22:56 UTCEPSS rescore
  15. 2026-08-19 18:55 UTCEG score recompute
  16. 2026-08-19 17:04 UTCEPSS rescore
  17. 2026-08-18 15:48 UTCEG score recompute
  18. 2026-08-18 13:48 UTCEPSS rescore
  19. 2026-08-18 02:35 UTCEG score recompute
  20. 2026-08-17 13:47 UTCEPSS rescore
  21. 2026-08-17 00:56 UTCEG score recompute
  22. 2026-08-16 14:56 UTCEPSS rescore
  23. 2026-08-16 12:06 UTCEG score recompute
  24. 2026-08-15 10:27 UTCEG score recompute
  25. 2026-08-15 01:30 UTCEPSS rescore
Show 21 more
  1. 2026-08-14 08:48 UTCEG score recompute
  2. 2026-08-13 22:00 UTCEPSS rescore
  3. 2026-08-12 18:18 UTCEG score recompute
  4. 2026-08-12 13:51 UTCEPSS rescore
  5. 2026-08-11 16:38 UTCEG score recompute
  6. 2026-08-11 03:48 UTCEG score recompute
  7. 2026-08-11 00:00 UTCEPSS rescore
  8. 2026-08-10 02:09 UTCEG score recompute
  9. 2026-08-09 13:47 UTCEPSS rescore
  10. 2026-08-09 00:30 UTCEG score recompute
  11. 2026-08-08 16:37 UTCEPSS rescore
  12. 2026-08-07 22:50 UTCEG score recompute
  13. 2026-08-06 21:11 UTCEG score recompute
  14. 2026-08-06 13:47 UTCEPSS rescore
  15. 2026-08-05 19:31 UTCEG score recompute
  16. 2026-08-05 19:17 UTCEPSS rescore
  17. 2026-08-05 19:17 UTCEPSS rescore
  18. 2026-08-05 19:01 UTCEG score recompute
  19. 2026-08-04 21:32 UTCEG score recompute
  20. 2026-08-04 20:44 UTCEG score recompute
  21. 2026-08-04 20:40 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-65986?
CVE-2026-65986 is a high vulnerability published on August 4, 2026. CVAT is an open source interactive video and image annotation tool for computer vision. Versions 2.5.0 through 2.66.0 contain a XSS vulnerability that can be accessed through annotation guide assets. When CVAT serves the files attached to an annotation guide, it labels them with a media type (…
When was CVE-2026-65986 disclosed?
CVE-2026-65986 was first published in the National Vulnerability Database on August 4, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-65986 actively exploited?
CVE-2026-65986 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 85.2% of all scored CVEs.
What is the CVSS score of CVE-2026-65986?
CVE-2026-65986 has a CVSS v3 base score of 8.5 (NVD).
How do I remediate CVE-2026-65986?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-65986, 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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