CVE-2026-46490

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 70% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

samlify is a Node.js library for SAML single sign-on. Prior to version 2.13.0, samlify’s template substitution only escapes attribute contexts. Values inserted into element text (e.g., ) are not escaped. A normal user can inject XML markup into an attribute value (e.g., email, name) and add new elements inside the signed assertion. The IdP then signs the tampered assertion and the SP accepts the injected attributes as trusted. This allows privilege escalation when attributes are used for authorization (roles/groups). This issue has been patched in version 2.13.0.

CVSS v3
8.8
EG Score
8.8(medium)
EPSS
30.3%
KEV
Not listed

Published

May 21, 2026

Last Modified

June 9, 2026

Advisory Details (1)

Auto-updated Jun 8, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

XML Injection in AttributeValue Allows Privilege Escalation in Signed SAML Assertions · Advisory · tngan/samlify · GitHub

https://github.com/tngan/samlify/security/advisories/GHSA-34r5-q4jw-r36m

Vendor Advisories for CVE-2026-46490(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
samlify—2.13.0—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 53× 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.

  1. 2026-07-11 08:27 UTCEPSS rescore
  2. 2026-07-09 19:10 UTCEPSS rescore
  3. 2026-07-08 15:16 UTCEPSS rescore
  4. 2026-07-07 13:46 UTCEPSS rescore
  5. 2026-07-06 16:27 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 02:30 UTCEPSS rescore
  8. 2026-07-04 06:31 UTCEPSS rescore
  9. 2026-07-01 15:07 UTCEPSS rescore
  10. 2026-06-30 23:22 UTCEPSS rescore
  11. 2026-06-29 20:06 UTCEG score recompute
  12. 2026-06-28 14:07 UTCEPSS rescore
  13. 2026-06-28 09:49 UTCEG score recompute
  14. 2026-06-28 04:56 UTCEPSS rescore
  15. 2026-06-28 04:56 UTCEPSS rescore
  16. 2026-06-27 21:00 UTCEG score recompute
  17. 2026-06-27 08:11 UTCEG score recompute
  18. 2026-06-27 03:08 UTCEPSS rescore
  19. 2026-06-26 19:22 UTCEG score recompute
  20. 2026-06-26 03:36 UTCEG score recompute
  21. 2026-06-25 14:21 UTCEG score recompute
  22. 2026-06-25 13:49 UTCEPSS rescore
  23. 2026-06-24 14:05 UTCEPSS rescore
  24. 2026-06-23 21:33 UTCEPSS rescore
  25. 2026-06-23 21:33 UTCEPSS rescore
Show 40 more
  1. 2026-06-22 14:25 UTCEPSS rescore
  2. 2026-06-22 14:25 UTCEPSS rescore
  3. 2026-06-21 14:56 UTCEPSS rescore
  4. 2026-06-21 14:56 UTCEPSS rescore
  5. 2026-06-21 01:59 UTCEPSS rescore
  6. 2026-06-21 01:59 UTCEPSS rescore
  7. 2026-06-19 19:26 UTCEPSS rescore
  8. 2026-06-19 19:26 UTCEPSS rescore
  9. 2026-06-18 17:52 UTCEPSS rescore
  10. 2026-06-18 17:52 UTCEPSS rescore
  11. 2026-06-18 02:00 UTCEG score recompute
  12. 2026-06-17 17:53 UTCEPSS rescore
  13. 2026-06-17 13:11 UTCEG score recompute
  14. 2026-06-17 00:23 UTCEG score recompute
  15. 2026-06-16 17:53 UTCEPSS rescore
  16. 2026-06-16 11:35 UTCEG score recompute
  17. 2026-06-15 22:48 UTCEG score recompute
  18. 2026-06-15 17:49 UTCEPSS rescore
  19. 2026-06-15 05:14 UTCEG score recompute
  20. 2026-06-14 16:18 UTCEG score recompute
  21. 2026-06-14 03:21 UTCEG score recompute
  22. 2026-06-13 23:00 UTCEPSS rescore
  23. 2026-06-13 14:31 UTCEG score recompute
  24. 2026-06-13 01:40 UTCEG score recompute
  25. 2026-06-12 23:12 UTCEPSS rescore
  26. 2026-06-12 23:12 UTCEPSS rescore
  27. 2026-06-12 12:50 UTCEG score recompute
  28. 2026-06-11 23:59 UTCEG score recompute
  29. 2026-06-11 14:00 UTCEPSS rescore
  30. 2026-06-11 11:11 UTCEG score recompute
  31. 2026-06-10 22:20 UTCEG score recompute
  32. 2026-06-10 22:18 UTCEPSS rescore
  33. 2026-06-10 13:22 UTCEPSS rescore
  34. 2026-06-10 13:22 UTCEPSS rescore
  35. 2026-06-10 09:32 UTCEG score recompute
  36. 2026-06-09 20:44 UTCEG score recompute▲ 0.10
  37. 2026-06-09 17:17 UTCNVD updateCVSS v3 → 8.8
  38. 2026-06-09 07:46 UTCEG score recompute
  39. 2026-06-08 18:57 UTCEG score recompute▲ 8.70
  40. 2026-05-24 06:12 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-46490?
CVE-2026-46490 is a high vulnerability published on May 21, 2026. samlify is a Node.js library for SAML single sign-on. Prior to version 2.13.0, samlify’s template substitution only escapes attribute contexts. Values inserted into element text (e.g., <saml:AttributeValue>) are not escaped. A normal user can inject XML markup into an attribute value (e.g., email,…
When was CVE-2026-46490 disclosed?
CVE-2026-46490 was first published in the National Vulnerability Database on May 21, 2026, with the most recent update on June 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46490 actively exploited?
CVE-2026-46490 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 30.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-46490?
CVE-2026-46490 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-46490?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46490, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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