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.
CVE-2026-31982
Score 7.1 from GitHub Security Advisory published 2026-07-09. a secondary CVSS source baseline 7.1; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.1
- EG Score
- 7.1(medium)
- EG Risk
- 32(Track)EG Risk 32/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity71% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 23%
- KEV
- Not listed
Published
July 9, 2026
Last Modified
August 11, 2026
Advisory Details (1)
Auto-updated Jul 9, 2026NN-2026:9-01 - Open Redirect in SAML Single Sign-On in Guardian/CMC before 26.2.0 - CVE-2026-31982 | Product Security Incident Response Portal
https://security.nozominetworks.com/NN-2026:9-01Vendor Advisories for CVE-2026-31982(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 20× in last 7d / 111× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 174 total refreshes for this CVE.
- 2026-08-30 06:57 UTCEG score recompute
- 2026-08-30 06:57 UTCGHSA enrichment
- 2026-08-30 01:22 UTCEPSS rescore
- 2026-08-28 21:41 UTCEPSS rescore
- 2026-08-27 21:47 UTCEG score recompute
- 2026-08-27 21:47 UTCGHSA enrichment
- 2026-08-27 14:25 UTCEPSS rescore
- 2026-08-27 01:13 UTCEG score recompute
- 2026-08-27 01:13 UTCGHSA enrichment
- 2026-08-26 14:46 UTCEPSS rescore
- 2026-08-26 03:56 UTCEG score recompute
- 2026-08-26 03:56 UTCGHSA enrichment
- 2026-08-25 13:49 UTCEPSS rescore
- 2026-08-25 11:38 UTCGHSA enrichment
- 2026-08-24 22:29 UTCEG score recompute
- 2026-08-24 22:29 UTCGHSA enrichment
- 2026-08-24 14:17 UTCEPSS rescore
- 2026-08-24 09:39 UTCEG score recompute
- 2026-08-24 09:39 UTCGHSA enrichment
- 2026-08-23 20:23 UTCGHSA enrichment
- 2026-08-23 07:33 UTCEG score recompute
- 2026-08-23 07:33 UTCGHSA enrichment
- 2026-08-23 00:19 UTCEPSS rescore
- 2026-08-22 18:42 UTCGHSA enrichment
- 2026-08-22 05:51 UTCEG score recompute
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- 2026-08-22 05:51 UTCGHSA enrichment
- 2026-08-21 23:49 UTCEPSS rescore
- 2026-08-21 17:00 UTCGHSA enrichment
- 2026-08-21 04:10 UTCEG score recompute
- 2026-08-21 04:10 UTCGHSA enrichment
- 2026-08-20 22:55 UTCEPSS rescore
- 2026-08-20 22:55 UTCEPSS rescore
- 2026-08-20 15:19 UTCGHSA enrichment
- 2026-08-20 01:52 UTCEG score recompute
- 2026-08-20 01:52 UTCGHSA enrichment
- 2026-08-19 17:03 UTCEPSS rescore
- 2026-08-19 09:47 UTCGHSA enrichment
- 2026-08-18 20:44 UTCEG score recompute
- 2026-08-18 20:44 UTCGHSA enrichment
- 2026-08-18 13:48 UTCEPSS rescore
- 2026-08-17 23:59 UTCEG score recompute
- 2026-08-17 23:59 UTCGHSA enrichment
- 2026-08-17 13:47 UTCEPSS rescore
- 2026-08-17 11:08 UTCGHSA enrichment
- 2026-08-16 22:18 UTCEG score recompute
- 2026-08-16 22:18 UTCGHSA enrichment
- 2026-08-16 14:56 UTCEPSS rescore
- 2026-08-16 09:27 UTCEG score recompute
- 2026-08-16 09:27 UTCGHSA enrichment
- 2026-08-16 02:14 UTCEPSS rescore
- 2026-08-15 20:37 UTCGHSA enrichment
- 2026-08-15 07:46 UTCEG score recompute
- 2026-08-15 07:46 UTCGHSA enrichment
- 2026-08-15 01:30 UTCEPSS rescore
- 2026-08-14 18:49 UTCGHSA enrichment
- 2026-08-14 05:59 UTCEG score recompute
- 2026-08-14 05:59 UTCGHSA enrichment
- 2026-08-13 22:00 UTCEPSS rescore
- 2026-08-13 17:08 UTCGHSA enrichment
- 2026-08-13 03:55 UTCGHSA enrichment
- 2026-08-12 15:04 UTCEG score recompute
- 2026-08-12 15:04 UTCGHSA enrichment
- 2026-08-12 13:50 UTCEPSS rescore
- 2026-08-12 02:14 UTCEG score recompute
- 2026-08-12 02:14 UTCGHSA enrichment
- 2026-08-11 13:23 UTCEG score recompute
- 2026-08-11 13:23 UTCGHSA enrichment
- 2026-08-11 12:38 UTCEG score recompute
- 2026-08-11 12:38 UTCGHSA enrichment
- 2026-08-11 05:09 UTCEG score recompute
- 2026-08-11 05:08 UTCGHSA enrichment
- 2026-08-11 00:00 UTCEPSS rescore
- 2026-08-10 16:18 UTCGHSA enrichment
- 2026-08-10 03:08 UTCGHSA enrichment
- 2026-08-09 14:17 UTCEG score recompute
- 2026-08-09 14:17 UTCGHSA enrichment
- 2026-08-09 13:46 UTCEPSS rescore
- 2026-08-09 01:27 UTCEG score recompute
- 2026-08-09 01:27 UTCGHSA enrichment
- 2026-08-08 16:37 UTCEPSS rescore
- 2026-08-08 12:37 UTCEG score recompute
- 2026-08-08 12:37 UTCGHSA enrichment
- 2026-08-07 23:46 UTCEG score recompute
- 2026-08-07 23:46 UTCGHSA enrichment
- 2026-08-07 10:55 UTCGHSA enrichment
- 2026-08-06 22:04 UTCEG score recompute
- 2026-08-06 22:04 UTCGHSA enrichment
- 2026-08-06 13:46 UTCEPSS rescore
- 2026-08-06 09:14 UTCGHSA enrichment
- 2026-08-05 20:23 UTCEG score recompute
- 2026-08-05 20:23 UTCGHSA enrichment
- 2026-08-05 19:17 UTCEPSS rescore
- 2026-08-05 07:33 UTCGHSA enrichment
- 2026-08-04 18:34 UTCEG score recompute
- 2026-08-04 18:34 UTCGHSA enrichment
- 2026-08-04 15:10 UTCEPSS rescore
- 2026-08-04 10:38 UTCEPSS rescore
- 2026-08-04 05:43 UTCGHSA enrichment
- 2026-08-03 16:53 UTCEG score recompute
- 2026-08-03 16:53 UTCGHSA enrichment
Frequently asked(5)
What is CVE-2026-31982?
When was CVE-2026-31982 disclosed?
Is CVE-2026-31982 actively exploited?
What is the CVSS score of CVE-2026-31982?
How do I remediate CVE-2026-31982?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-31982
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