9.8

CVE-2022-41912: crewjam/saml go library is vulnerable to signature bypass via multiple Assertion elements

Modified
AliasesUBUNTU-CVE-2022-41912GHSA-j2jp-wvqg-wc2gGO-2022-1129
Published 28-11-2022Last modified 23-04-2025

Vulnerability summary

CVE-2022-41912 is a critical (CVSS 9.8) Improper Authentication vulnerability in crewjam saml. EPSS estimates a 2.34% chance of exploitation in the next 30 days, higher than 83.6% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9.1 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 2% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
2.34%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 28-11-2022
    PublishedVulnerability first disclosed.
  2. 23-04-2025
    Last modifiedVulnerability information updated.

Description

The crewjam/saml go library prior to version 0.4.9 is vulnerable to an authentication bypass when processing SAML responses containing multiple Assertion elements. This issue has been corrected in version 0.4.9. There are no workarounds other than upgrading to a fixed version.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

2.34%

Chance of exploitation in the next 30 days

Percentile

84%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 2.33% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Crewjam1 product
Github.com/crewjam1 product
  • saml< 0.4.9
Saml_project1 product
Ubuntu1 product
  • golang-github-crewjam-samlAll versions (No fix recorded)

4 vendors · 4 products

References

10 links