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HIGH severity

CVE-2012-0881 — xercesImpl

HIGHFix: apache/xerces2-j@992b5d9

CVE-2012-0881 is a high-severity (CVSS 7.5) CWE-399 vulnerability in xerces:xercesImpl. EPSS puts its 30-day exploitation probability at 17.0% (97th percentile). A fix is available for xerces:xercesImpl — see the affected versions and patch details below.

Denial of service in Apache Xerces2

Also known asGHSA-vmqm-g3vh-847m
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 11, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
17.0%probability of exploitation in next 30 days
Moderate Risk0.00%
Lower risk than most CVEs97th percentile — riskier than 97% of all scored CVEsHighest risk
0.00%7.36%14.7%22.1%2.1%17.0%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2012-0881 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,738 CVEs with a current EPSS score, this one falls in the 10–50% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected
☕xerces:xercesImpl

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Apache Xerces2 Java Parser before 2.12.0 allows remote attackers to cause a denial of service (CPU consumption) via a crafted message to an XML service, which triggers hash table collisions.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenxerces:xercesImplall versions2.12.0xerces:xercesImpl:2.12.0

Affected Products

1 product · 1 configurations
Application
xerces2 javaapache
≤ 2.11.0
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for xerces:xercesImpl, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update xerces:xercesImpl to 2.12.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2012-0881 is resolved across your whole dependency graph.

  3. Workarounds

    Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Frequently Asked Questions

Apache Xerces2 Java Parser before 2.12.0 allows remote attackers to cause a denial of service (CPU consumption) via a crafted message to an XML service, which triggers hash table collisions.
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CVE-2012-0881: xercesImpl DoS — Fixed in 2.12.0