Vulnerability details

CVE-2026-116201

grokability snipe-it

Snipe-IT before 8.5.0 SAML Assertion Replay via Race Condition

CVSS 4.0

8.7High

Official description

Snipe-IT before 8.5.0 contains a SAML assertion replay vulnerability that allows attackers to reuse captured assertions by exploiting a non-atomic nonce check in the SAML acs handler. Attackers can send concurrent POST requests to /saml/acs with one captured assertion to obtain multiple authenticated victim sessions that evade IdP-driven revocation.

CVSS scores

Score	Version	Source	Vector
8.7High	4.0	CVEProject cvelistV5 (CNA) (VulnCheck)	`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`
8.8High	3.1	CVEProject cvelistV5 (CNA) (VulnCheck)	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
grokability	snipe-it	v < 8.5.0	CVEProject cvelistV5 (CNA)

References and advisories

https://github.com/grokability/snipe-it/security/advisories/GHSA-w49g-f2jc-qxhg vendor-advisory
https://www.vulncheck.com/advisories/snipe-it-before-8.5.0-saml-assertion-replay-via-race-condition third-party-advisory

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Details

Published: 2026-10-25
Last updated: 2026-10-29
State: Published
Assigner (CNA): VulnCheck

Exploit prediction (EPSS)

0.3%

Probability of exploitation in 30 days

23.1%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-294
Authentication Bypass by Capture-replay