3.1

CVE-2026-87952: SAML SSO - Service Provider - Moderately critical - Insufficient replay protection - SA-CONTRIB-2026-150

Awaiting analysis
Published 22-10-2026Last modified 22-10-2026

Vulnerability summary

CVE-2026-87952 is a low (CVSS 3.1) Authentication Bypass by Capture-replay vulnerability in drupal saml sso - service provider. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 8.4% of scored vulnerabilities.

Overall risk
12/100
0100
Low · default modelHow is this calculated?
CVSS score
3.1/10
010
Low · v3.1 (CVE.org)
EPSS score
0.19%
0%100%
Low · Change unavailable
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 22-10-2026
    PublishedVulnerability first disclosed.
  2. 22-10-2026
    Last modifiedVulnerability information updated.

Description

Authentication Bypass by Capture-replay vulnerability in Drupal SAML SSO - Service Provider allows Remote Services with Stolen Credentials. This issue affects SAML SSO - Service Provider versions: from 0.0.0 to 3.2.0.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

8%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

22-10-202622-10-2026

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

Drupal1 product

1 vendor · 1 product

References

1 links