CVE-2024-45409

CRITICALNVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 10.0 under NVD CVSS v3. EPSS exploit probability: 11% (95th percentile of EPSS-scored CVEs). 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
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 11%CVSS: 10.0Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

The Ruby SAML library is for implementing the client side of a SAML authorization. Ruby-SAML in <= 12.2 and 1.13.0 <= 1.16.0 does not properly verify the signature of the SAML Response. An unauthenticated attacker with access to any signed saml document (by the IdP) can thus forge a SAML Response/Assertion with arbitrary contents. This would allow the attacker to log in as arbitrary user within the vulnerable system. This vulnerability is fixed in 1.17.0 and 1.12.3.

CVSS v3
10.0
EG Score
10.0CRITICALmedium confidence
EG Risk
76
EG Risk 76/100CISA SSVC

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 computed
Severity100% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
11%
EPSS %ILE
95th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 10, 2024

Last Modified

November 21, 2024

Advisory Details (7)

Auto-updated Oct 3, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: github_commit, github.
generic

NetApp Product Security

https://security.netapp.com/advisory/ntap-20240926-0008/
generic🔴 Active Exploitation

Ruby-SAML pwned by XML signature wrapping attacks | Hacker News

https://news.ycombinator.com/item?id=41586031
genericMentions a patch (unverified)

[SECURITY] [DLA 3949-1] ruby-saml security update

https://lists.debian.org/debian-lts-announce/2024/11/msg00006.html
githubMentions a patch (unverified)

Improper Verification of Cryptographic Signature in omniauth-saml · Advisory · omniauth/omniauth-saml · GitHub

Affected: v1.17.

https://github.com/omniauth/omniauth-saml/security/advisories/GHSA-cvp8-5r8g-fhvq
githubMentions a patch (unverified)

SAML authentication bypass via Incorrect XPath selector · Advisory · SAML-Toolkits/ruby-saml · GitHub

https://github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-jw9c-mfg7-9rx2
github_commit Patch Available

commit 4865d030cae9 (SAML-Toolkits/ruby-saml)

Patch available: SAML-Toolkits/ruby-saml v1.17.0 (contains commit 4865d030cae9)

https://github.com/SAML-Toolkits/ruby-saml/commit/4865d030cae9705ee5cdb12415c654c634093ae7
github_commit Patch Available

commit 1ec5392bc506 (SAML-Toolkits/ruby-saml)

Patch available: SAML-Toolkits/ruby-saml v1.12.3 (contains commit 1ec5392bc506)

https://github.com/SAML-Toolkits/ruby-saml/commit/1ec5392bc506fe43a02dbb66b68741051c5ffeae

Vendor Advisories for CVE-2024-45409(2)

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

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubunturuby-saml (1.1.2-1ubuntu1+esm1) @ xenial2026-05-23ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(3 across 3 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
ruby-saml1.11.0-1
  • every version up to 1.11.0-1+deb11u1: fixed in 1.11.0-1+deb11u1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
ruby-saml1.13.0-1
  • every version up to 1.13.0-1+deb12u1: fixed in 1.13.0-1+deb12u1
—
RubyGems(1)
PackageVulnerable rangeFix by version rangeDependents
ruby-saml1.13.0, 1.14.0, 1.15.0, 1.16.0
  • every version up to 1.12.3: fixed in 1.12.3
  • 1.13.0 up to 1.17.0: fixed in 1.17.0
—

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 7× in last 7d / 32× 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 158 total refreshes for this CVE.

  1. 2026-10-09 23:55 UTCOSV refresh
  2. 2026-10-09 20:05 UTCEPSS rescore
  3. 2026-10-08 17:08 UTCEPSS rescore
  4. 2026-10-07 23:46 UTCEPSS rescore
  5. 2026-10-06 15:15 UTCEPSS rescore
  6. 2026-10-05 17:41 UTCEPSS rescore
  7. 2026-10-03 14:24 UTCEPSS rescore
  8. 2026-10-01 19:48 UTCEPSS rescore
  9. 2026-09-30 19:53 UTCEG score recompute
  10. 2026-09-30 15:01 UTCEPSS rescore
  11. 2026-09-29 15:17 UTCEPSS rescore
  12. 2026-09-28 13:50 UTCEPSS rescore
  13. 2026-09-27 13:44 UTCEPSS rescore
  14. 2026-09-26 15:57 UTCEPSS rescore
  15. 2026-09-24 14:01 UTCEPSS rescore
  16. 2026-09-23 13:46 UTCEPSS rescore
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  18. 2026-09-21 20:32 UTCEPSS rescore
  19. 2026-09-20 20:14 UTCEPSS rescore
  20. 2026-09-20 20:14 UTCEPSS rescore
  21. 2026-09-20 08:13 UTCOSV refresh
  22. 2026-09-19 15:40 UTCEPSS rescore
  23. 2026-09-18 19:26 UTCEPSS rescore
  24. 2026-09-18 19:26 UTCEPSS rescore
  25. 2026-09-16 14:06 UTCEPSS rescore
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  1. 2026-09-16 05:12 UTCEPSS rescore
  2. 2026-09-15 03:08 UTCEPSS rescore
  3. 2026-09-15 03:08 UTCEPSS rescore
  4. 2026-09-13 16:45 UTCEPSS rescore
  5. 2026-09-12 14:59 UTCEPSS rescore
  6. 2026-09-11 14:51 UTCEPSS rescore
  7. 2026-09-11 09:35 UTCEPSS rescore
  8. 2026-09-08 21:58 UTCEPSS rescore
  9. 2026-09-06 13:46 UTCEPSS rescore
  10. 2026-09-06 13:46 UTCEPSS rescore
  11. 2026-09-05 15:27 UTCEPSS rescore
  12. 2026-09-04 13:59 UTCEPSS rescore
  13. 2026-09-04 05:05 UTCEPSS rescore
  14. 2026-09-02 14:10 UTCEPSS rescore
  15. 2026-09-01 13:52 UTCEPSS rescore
  16. 2026-09-01 11:07 UTCOSV refresh
  17. 2026-08-30 19:16 UTCEPSS rescore
  18. 2026-08-28 21:39 UTCEPSS rescore
  19. 2026-08-27 14:23 UTCEPSS rescore
  20. 2026-08-25 13:47 UTCEPSS rescore
  21. 2026-08-24 14:15 UTCEPSS rescore
  22. 2026-08-23 00:18 UTCEPSS rescore
  23. 2026-08-21 23:47 UTCEPSS rescore
  24. 2026-08-20 22:54 UTCEPSS rescore
  25. 2026-08-19 17:02 UTCEPSS rescore
  26. 2026-08-18 13:46 UTCEPSS rescore
  27. 2026-08-17 13:45 UTCEPSS rescore
  28. 2026-08-16 14:54 UTCEPSS rescore
  29. 2026-08-16 02:13 UTCEPSS rescore
  30. 2026-08-15 11:07 UTCOSV refresh
  31. 2026-08-15 01:28 UTCEPSS rescore
  32. 2026-08-13 21:59 UTCEPSS rescore
  33. 2026-08-12 13:49 UTCEPSS rescore
  34. 2026-08-11 13:40 UTCEPSS rescore
  35. 2026-08-08 16:35 UTCEPSS rescore
  36. 2026-08-07 16:25 UTCEPSS rescore
  37. 2026-08-06 13:45 UTCEPSS rescore
  38. 2026-08-05 19:16 UTCEPSS rescore
  39. 2026-08-04 15:08 UTCEPSS rescore
  40. 2026-08-04 10:36 UTCEPSS rescore
  41. 2026-08-02 02:25 UTCEPSS rescore
  42. 2026-08-01 04:14 UTCEPSS rescore
  43. 2026-07-30 23:21 UTCOSV refresh
  44. 2026-07-30 16:26 UTCEPSS rescore
  45. 2026-07-30 01:29 UTCEPSS rescore
  46. 2026-07-28 15:34 UTCEPSS rescore
  47. 2026-07-26 14:53 UTCEPSS rescore
  48. 2026-07-26 14:53 UTCEPSS rescore
  49. 2026-07-25 14:16 UTCEPSS rescore
  50. 2026-07-24 14:16 UTCEPSS rescore
  51. 2026-07-23 14:17 UTCEPSS rescore
  52. 2026-07-23 02:40 UTCEG score recompute
  53. 2026-07-22 14:07 UTCEPSS rescore
  54. 2026-07-21 15:23 UTCEPSS rescore
  55. 2026-07-21 15:23 UTCEPSS rescore
  56. 2026-07-20 17:06 UTCEPSS rescore
  57. 2026-07-19 14:30 UTCEPSS rescore
  58. 2026-07-19 14:30 UTCEPSS rescore
  59. 2026-07-19 02:28 UTCEPSS rescore
  60. 2026-07-19 02:28 UTCEPSS rescore
  61. 2026-07-18 10:03 UTCEPSS rescore
  62. 2026-07-18 10:03 UTCEPSS rescore
  63. 2026-07-16 17:02 UTCEPSS rescore
  64. 2026-07-15 16:56 UTCEPSS rescore
  65. 2026-07-15 16:56 UTCEPSS rescore
  66. 2026-07-15 01:59 UTCEPSS rescore
  67. 2026-07-15 01:59 UTCEPSS rescore
  68. 2026-07-13 22:29 UTCEPSS rescore
  69. 2026-07-13 08:08 UTCOSV refresh
  70. 2026-07-12 05:45 UTCEPSS rescore
  71. 2026-07-12 05:45 UTCEPSS rescore
  72. 2026-07-11 08:26 UTCEPSS rescore
  73. 2026-07-09 19:09 UTCEPSS rescore
  74. 2026-07-09 19:09 UTCEPSS rescore
  75. 2026-07-08 15:14 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCsynacktiv/CVE-2024-45409
    First seen Oct 7, 2024

    Ruby-SAML / GitLab Authentication Bypass (CVE-2024-45409) exploit

    Open source ↗

Related CVEs(same product + same vendor + same CWE)

Same vendor

2 shown

ubuntu:USN-7309-1

Frequently asked(5)

What is CVE-2024-45409?
CVE-2024-45409 is a critical vulnerability published on September 10, 2024. The Ruby SAML library is for implementing the client side of a SAML authorization. Ruby-SAML in <= 12.2 and 1.13.0 <= 1.16.0 does not properly verify the signature of the SAML Response. An unauthenticated attacker with access to any signed saml document (by the IdP) can thus forge a SAML…
When was CVE-2024-45409 disclosed?
CVE-2024-45409 was first published on September 10, 2024, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-45409 actively exploited?
CVE-2024-45409 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 11% probability of exploitation in the next 30 days (95th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2024-45409?
CVE-2024-45409 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2024-45409?
A fix for CVE-2024-45409 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2024-45409 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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