CVE-2025-26499

MEDIUMNVD 6.06.0—
EchelonGraph scoreMEDIUM confidence

Score 6.0 from GitHub Security Advisory published 2025-09-11. NVD baseline CVSS 6.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.0Exploit: NoneExposed: 0

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

Under heavy system utilization a random race condition can occur during authentication or token refresh operation. This flaw allows one user to be granted a token intended for another user, resulting in impersonation until the session is ended. This flaw cannot be intentionally exploited due to the required concurring action by two users. However, if the event occurs a user would be inadvertently exposed to another user’s system rights and data access.

CVSS v3
6.0
EG Score
6.0(medium)
EPSS
2.7%
KEV
Not listed

Published

September 11, 2025

Last Modified

April 15, 2026

References (2)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 40× 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 116 total refreshes for this CVE.

  1. 2026-07-22 14:07 UTCEPSS rescore
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  75. 2026-05-22 21:16 UTCEPSS rescore

Frequently asked(5)

What is CVE-2025-26499?
CVE-2025-26499 is a medium vulnerability published on September 11, 2025. Under heavy system utilization a random race condition can occur during authentication or token refresh operation. This flaw allows one user to be granted a token intended for another user, resulting in impersonation until the session is ended. This flaw cannot be intentionally exploited due to the…
When was CVE-2025-26499 disclosed?
CVE-2025-26499 was first published in the National Vulnerability Database on September 11, 2025, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-26499 actively exploited?
CVE-2025-26499 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-26499?
CVE-2025-26499 has a CVSS v3 base score of 6.0 (NVD).
How do I remediate CVE-2025-26499?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-26499, 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.

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