CVE-2026-100502 (CVSS 5)

Description

Flame through 2.4.0 contains an insufficient session expiration vulnerability in the login endpoint that allows attackers with former admin access to obtain tokens with arbitrary lifespans by supplying unvalidated duration parameters. Attackers can mint near-permanent administrator tokens that survive password changes, retaining full control of the dashboard since tokens are verified only against a static JWT secret that is never rotated.

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CVSS v3.1 Score

5.0

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:H/A:N

EPSS — Exploit Prediction

0.0029

Probability of exploitation

0.20%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-613 CWE-613

References

Other References

https://github.com/pawelmalak/flame https://github.com/pawelmalak/flame/blob/v2.4.0/controllers/auth/login.js#L9-L17 https://github.com/pawelmalak/flame/blob/v2.4.0/utils/init/initSecret.js#L8-L25 https://github.com/pawelmalak/flame/blob/v2.4.0/utils/signToken.js#L4 https://github.com/pawelmalak/flame/issues/494 https://www.vulncheck.com/advisories/flame-through-2.4.0-admin-token-insufficient-session-expiration https://github.com/pawelmalak/flame/issues/494

Frequently Asked Questions

What is CVE-2026-100502? +

Flame through 2.4.0 contains an insufficient session expiration vulnerability in the login endpoint that allows attackers with former admin access to obtain tokens with arbitrary lifespans by supplying unvalidated duration parameters. Attackers can mint near-permanent administrator tokens that survive password changes, retaining full control of the dashboard since tokens are verified only against a static JWT secret that is never rotated. It has a CVSS v3.1 base score of 5.0 (MEDIUM).

How severe is CVE-2026-100502? +

CVE-2026-100502 has a CVSS v3.1 score of 5.0 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0029, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-100502? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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