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Fencer Intel
critical 9.3

CVE-2025-29775 in the critical feed json

xml-crypto Vulnerable to XML Signature Verification Bypass via DigestValue Comment

published last yr. modified last mo. also GHSA-x3m8-899r-f7c3 , EUVD-2025-7891

cvss
9.3
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
10.1%
EPSS 10.1% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

xml-crypto is an XML digital signature and encryption library for Node.js. An attacker may be able to exploit a vulnerability in versions prior to 6.0.1, 3.2.1, and 2.1.6 to bypass authentication or authorization mechanisms in systems that rely on xml-crypto for verifying signed XML documents. The vulnerability allows an attacker to modify a valid signed XML message in a way that still passes signature verification checks. For example, it could be used to alter critical identity or access control attributes, enabling an attacker to escalate privileges or impersonate another user. Users of versions 6.0.0 and prior should upgrade to version 6.0.1 to receive a fix. Those who are still using v2.x or v3.x should upgrade to patched versions 2.1.6 or 3.2.1, respectively.

Patch / fix

  • npm xml-crypto 2.1.6, 3.2.1, 6.0.1

Is CVE-2025-29775 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-29775 updated cvss 9.1

xml-crypto: xml-crypto Vulnerable to XML Signature Verification Bypass via DigestValue Comment

  • Red Hat OpenShift Serverless openshift-serverless-1/kn-backstage-plugins-eventmesh-rhel8
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Developer Hub (RHDH) 1.4 rhdh 1.4.3-1743652461
    fixed: vendor fix RHSA-2025:3595
  • Red Hat Developer Hub 1.5 rhdh
    fixed: vendor fix RHSA-2025:3374
  • Red Hat Developer Hub 1.6 rhdh 1.6.0-1745956724
    fixed: vendor fix RHSA-2025:7626
  • Red Hat Developer Hub (RHDH) 1.4 rhdh 1.4.3-1743648196, rhdh 1.4.3-1743659048 Red Hat Developer Hub 1.5 rhdh Red Hat Developer Hub 1.6 rhdh 1.6.0-1745956395, rhdh 1.6.0-1745970106
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
total
Assessed
last yr.

Exploit prediction

10.14% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 4.0 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA 4.0 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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:X

Affected packages

ecosystem package affected fixed in
npm xml-crypto
>=4.0.0, <6.0.1
>=3.0.0, <3.2.1
<2.1.6
6.0.1
3.2.1
2.1.6

Affected products

  • node-saml xml-crypto

Classification

Weakness
  • CWE-347 Improper Verification of Cryptographic Signature

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.