CVE-2026-31982: An Open Redirect vulnerability was discovered in the SAML Single Sign-On functionality due to insufficient validation of a user-controlled redirection parameter. An unauthenticated
An Open Redirect vulnerability was discovered in the SAML Single Sign-On functionality due to insufficient validation of a user-controlled redirection parameter. An unauthenticated attacker can craft a request to the SAML sign-in endpoint and poison the cached SAML redirection for other users who subsequently initiate SAML Single Sign-On, enabling phishing and credential-theft attacks, as well as disrupting SAML authentication for all affected users.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-31982
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-319820.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-31982 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for An Open Redirect
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- unknownCVE-2026-55806: URL Redirection to Untrusted Site ('Open Redirect') vulnerability in Drupal Drupal core allows…nvd · 2026-07-10
- mediumCVE-2026-56354: n8n before 1.123.24, 2.10.4, and 2.12.0 (across its 1.x and 2.x branches) contains cross-site …nvd · 2026-07-10
- mediumGHSA-h5g6-xmh4-hc37: OpenRun: Redirect URL validation bypass using //host paths leads to Open Redirectghsa · 2026-07-09
- unknownCVE-2026-54004: Kirby is an open-source content management system. Prior to 4.9.4 and 5.4.4, Kirby sites with …nvd · 2026-07-09
- lowGHSA-43fc-v873-qw85: Waku has an Open Redirect via `unstable_redirect` Helperghsa · 2026-07-08
- highCVE-2026-59806: Gradio before 6.20.0 contains an open redirect and server-side request forgery vulnerability t…nvd · 2026-07-08
More from NVD Recent CVEs
- unknownCVE-2026-57828: The Joomla extension Phoca Downloads is vulnerable to an authenticated arbitrary file upload t…2026-07-11
- unknownCVE-2026-57827: The Joomla extension RSFiles is vulnerable to an unauthenticated arbitrary file upload that al…2026-07-11
- highCVE-2026-1359: The Genolve – AI image AI video generation plugin for WordPress is vulnerable to unauthorized m…2026-07-11
- highCVE-2026-9282: The W3 Total Cache plugin for WordPress is vulnerable to Directory Traversal in all versions up…2026-07-11
- mediumCVE-2026-9017: The NEX-Forms – Ultimate Forms Plugin for WordPress plugin for WordPress is vulnerable to autho…2026-07-11