CVE-2025-25293

highpriority · track · 31EPSS 0.015 · 75 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.53% (75th) EPSS

CVSS 7.5 · high

Is it mine?

26 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. Prior to versions 1.12.4 and 1.18.0, ruby-saml is susceptible to remote Denial of Service (DoS) with compressed SAML responses. ruby-saml uses zlib to decompress SAML responses in case they're compressed. It is possible to bypass the message size check with a compressed assertion since the message size is checked before inflation and not after. This issue may lead to remote Denial of Service (DoS). Versions 1.12.4 and 1.18.0 fix the issue.

cvss

Technical severity, 0–10. One row per scoring source.

7.7

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–7.7

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v4.07.7highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:Psecondary · ENISA EU

v4.07.7highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · security-advisories@github.com

v4.06.6mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-400USCWE-400USCWE-400USCWE-770US

affected products (26)

Products and version ranges known to be affected.

Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Hashicorp Terraform <v202502-2all versionscert_bundDE
NetApp StorageGRIDall versionscert_bundDEcpe:/a:netapp:storagegrid:-
Open Source Ruby SAML <1.12.4all versionscert_bundDE
Open Source Ruby SAML <1.18.0all versionscert_bundDE
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
HashiCorp Terraform< v202502-2cert_bundDE
Open Source Ruby≤ SAML <1.12.4cert_bundDE
Open Source Ruby≤ SAML <1.18.0cert_bundDE
SAML-Toolkits Ruby-SAML≤ < 1.12.4enisa_euvdEU
SAML-Toolkits Ruby-SAML1.13.0, → 1.18.0enisa_euvdEU
Ruby Team Omniauth SAML≤ 2.2.3fstec_bduRU
Ruby Team Omniauth SAML≤ 1.10.6fstec_bduRU
Ruby Team Omniauth SAML≤ 2.1.3fstec_bduRU
Ruby Team Ruby SAML≤ 1.12.4fstec_bduRU
Ruby Team Ruby SAML1.13.0 → 1.18.0fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 12fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 11fstec_bduRU
omniauth omniauth saml< 1.10.6nvdUScpe:2.3:a:omniauth:omniauth_saml:*:*:*:*:*:*:*:*
omniauth omniauth saml2.0.0 → 2.1.3nvdUScpe:2.3:a:omniauth:omniauth_saml:*:*:*:*:*:*:*:*

showing 20 of 26

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-0561Ruby SAML: Mehrere SchwachstellenDeutsch2025-03-13csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Ruby SAML ausnutzen, um Sicherheitsvorkehrungen zu umgehen und um einen Denial of Service Zustand herbeizuführen.
GHSA-92rq-c8cf-prrqRuby SAML allows remote Denial of Service (DoS) with compressed SAML responses2025-03-12ghsa · osvUS
### Summary ruby-saml is susceptible to remote Denial of Service (DoS) with compressed SAML responses. Ruby-saml uses zlib to decompress SAML responses in case they're compressed. It is possible to bypass the message size check with a compressed assertion since the message size is checked before inflation and not after. ### Impact This issue may lead to remote Denial of Service (DoS).
BIT-gitlab-2025-25293ruby-saml vulnerable to Remote Denial of Service (DoS) with compressed SAML responses2025-04-14vendor · osvUS
ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. Prior to versions 1.12.4 and 1.18.0, ruby-saml is susceptible to remote Denial of Service (DoS) with compressed SAML responses. ruby-saml uses zlib to decompress SAML responses in case they're compressed. It is possible to bypass the message size check with a compressed assertion since the message size is checked before inflation and not after. This issue may lead to remote Denial of Service (DoS). Versions 1.12.4 and 1.18.0 fix the issue.

also known as (6)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu osv cert_bund nvd NVD CVE.org MITRE

published 2025-03-12modified 2026-06-17

references (29)

External citations — patches, advisories, analysis.

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