CVE-2025-10990 | Rexml: rexml: denial of service via inefficient regex parsing

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.

Published: 2026-02-27 Last update: 2026-04-15 Assigner: [email protected] Source: [email protected]
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-10990 is rated Moderate Risk (41.8/100): CVSS High severity, with low exploitation likelihood (EPSS 0.42%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-10990

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.16% 0.42% +0.26%
2 2026-03-31 0.15% 0.16% +0.01%
3 2026-03-06 — 0.15% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-10990

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2025-10990

OS Trackers for CVE-2025-10990

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2025-10990
suse high — https://www.suse.com/security/cve/CVE-2025-10990/
ubuntu medium CVE-2025-10990 medium priority: Ubuntu including 7 source packages (jruby, ruby2.3, …), 35 status rows across 8 suites (bionic, focal, jammy, noble, questing, trusty, upstream, xenial): DNE 16, deferred 12, needs-triage 7. https://ubuntu.com/security/CVE-2025-10990

Affected software / configurations for CVE-2025-10990

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2025-10990

cvelogic Threat Intelligence