In Gatling Enterprise versions below 1.25.0, a user logging-out can still use his session token to continue using the application without e…

published 2025-08-06 15 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-23856

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 38%
public exploits: 0; none known

In Gatling Enterprise versions below 1.25.0, a user logging-out can still use his session token to continue using the application without expiration, due to incorrect session management.

Patch / fix

fixed in 1

gatling gatling 1.25.0

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 15 mo ago (2025-08-06)

Exploit prediction

0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/Flo354/vulnerabilities/tree/main/gatling-enterprise referenced PoC, tagged "exploit" by a source, unverified
github.com https://github.com/Flo354/vulnerabilities/blob/main/gatling-enterprise/CVE-2025-51306-broken-logout.md referenced PoC, tagged "exploit" by a source, unverified
github.com https://github.com/Flo354/vulnerabilities/blob/main/gatling-enterprise/CVE-2025-51306-change-permissions-not-reflected.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Classification

Weakness

CWE-1259 Improper Restriction of Security Token Assignment

References

Sources

CVE List CVE-2025-51306
NVD CVE-2025-51306

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary