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No exploitation reportedFix available

CVE-2025-10990

No exploitation reported by the sources we read.

  • Published2026-02-27
  • Fixed in3.3.9
  • WeaknessCWE-1333

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A flaw was found in REXML. A remote attacker could exploit inefficient regular expression (regex) parsing when processing hex numeric character references (&#x...;) in XML documents. This could lead to a Regular Expression Denial of Service (ReDoS), impacting the availability of the affected component. This issue is the result of an incomplete fix for CVE-2024-49761.

Timeline

dates in UTC
  1. 2026-02-2714:16CVE publishedNVD

Versions per branch

OSV
rexml
BranchAffectedFixed in
3.3< 3.3.93.3.9

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA6 products

As redhat, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-02-27

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • cjsonRed Hat:satellite:6.17::el9all versions · fixed in 0:1.7.18-2.el9satand 2 other packages
  • cjsonRed Hat:satellite:6.16::el9all versions · fixed in 0:1.7.18-2.el9satand 2 other packages
  • cjsonRed Hat:satellite:6.16::el8all versions · fixed in 0:1.7.18-2.el8satand 2 other packages
  • cjsonRed Hat:satellite_capsule:6.17::el9all versions · fixed in 0:1.7.18-2.el9satand 2 other packages
  • cjsonRed Hat:satellite_capsule:6.16::el9all versions · fixed in 0:1.7.18-2.el9satand 2 other packages
  • cjsonRed Hat:satellite_capsule:6.16::el8all versions · fixed in 0:1.7.18-2.el8satand 2 other packages
  • jrubyUbuntu:Pro:14.04:LTSall versions · no fixed version listed
  • jrubyUbuntu:26.10all versions · no fixed version listedand 1 other package

24 more package ranges on OSV.dev

Vendor advisories

  • CVE-2025-10990 Red Hat Product Security10 products fixed

    rexml: REXML: Denial of Service via inefficient regex parsing

  • RHSA-2025:17693 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: Satellite 6 Client Bug Fix Update

  • RHSA-2025:17613 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: Satellite 6.16.5.4 Async Update

  • RHSA-2025:17606 Red Hat Product Security2 products fixed

    Red Hat Security Advisory: Satellite 6.17.5 Async Update

Full record on NVD

Fix

  1. Update rexml to 3.3.9
  2. Vendor fix Red Hat Product Security RHSA-2025:17693 · 4 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For detailed instructions how to apply this update, refer to: https://access.redhat.com/documentation/en-us/red_hat_satellite/6.17/html/updating_red_hat_satellite/index
  3. Vendor fix Red Hat Product Security RHSA-2025:17613 · 8 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
  4. Workaround from the vendor Red Hat Product Security RHSA-2025:17693 · 4 productsMitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE recordread 2026-10-23
  • CISA-ADPSSVC decisionnone2026-02-27
  • CNACVSS 3.17.5known since 2026-10-23
  • CNAweakness (CWE)CWE-1333known since 2026-10-23
  • FIRST EPSSEPSS score0.5 %2026-11-09
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryMODERATE2024-10-28

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2026-02-27
Last Modified
2026-06-26
NVD status
Deferred
GitHub Advisory
GHSA-2rxp-v6pw-ch6m GHSA-qg2f-7w4r-25f2

Frequently asked questions

What is CVE-2025-10990?

A flaw was found in REXML. A remote attacker could exploit inefficient regular expression (regex) parsing when processing hex numeric character references (&#x...;) in XML documents. This could lead to a Regular Expression Denial of Service (ReDoS), impacting the availability of the affected component. This issue is the result of an incomplete fix for CVE-2024-49761.

Is CVE-2025-10990 actively exploited?

Active exploitation of CVE-2025-10990 has not been confirmed. Its EPSS score was 0.5% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-10990?

CVE-2025-10990 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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