CVE-2022-23437 — Infinite loop within Apache XercesJ xml parser

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

• Documented patch — www.oracle.com (NIST National Vulnerability Database)
• Documented patch — www.oracle.com (NIST National Vulnerability Database)

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

1. Identify exposed assets running the affected vendor/product/version combinations (Apache Software Foundation Apache Xerces, Apache Software Foundation Xerces-j, Netapp Active Iq Unified Manager…).
2. The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
3. Apply the fixed version or the patch documented under Remediation.
4. Exploitation requires user interaction: tighten email/web filtering and warn affected users.
5. EPSS ahead of 96% of scored CVEs: prioritize it in the patch queue.
6. Search available logs for exploit probes matching the vulnerability class (denial of service), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-835 · Infinite Loop

Other CVEs with this weakness →

EPSS over time FIRST

Oct 13, 2026 → Oct 15, 2026 · 3 reading(s) · max 11.62%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

• Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
• Track CPU/memory spikes and availability drops correlated with request patterns.

Timeline

What happened to this CVE, newest first.

• 2026
• Affected products added · apache software foundation/apache xerces
  Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
• SSVC assessment updated
  Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
• Record published
  Oct 13, 2026
• Fix documented
  Oct 13, 2026 · NIST National Vulnerability Database
• CVSS changed · 6.5
  Oct 13, 2026 · NIST National Vulnerability Database
• Source status changed · → Modified
  Oct 13, 2026 · NIST National Vulnerability Database
• Record created in this database
  Oct 13, 2026 · NIST National Vulnerability Database
• 2022
• CVE published
  Jan 24, 2022 · apache

Source activity

Repeated readings are counted rather than listed.

• 1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

5 on the record

• lists.apache.org/thread/6pjwm10bb69kq955fzr1n0nflnjd27dl
  Mailing List, Vendor Advisory, NIST National Vulnerability Database
• www.oracle.com/security-alerts/cpujul2022.html
  Patch, Third Party Advisory, NIST National Vulnerability Database
• www.oracle.com/security-alerts/cpuapr2022.html
  Patch, Third Party Advisory, NIST National Vulnerability Database
• security.netapp.com/advisory/ntap-20221028-0005/
  Third Party Advisory, NIST National Vulnerability Database
• www.openwall.com/lists/oss-security/2022/01/24/3
  Mailing List, Third Party Advisory, mailing-list, NIST National Vulnerability Database

Elsewhere on this site

Related CVEs (same products)

• High CVE-2026-87266 Improper Access Control in Oracle Agile Product Lifecycle Management Sep 15, 2026
• High CVE-2026-87264 Improper Access Control in Oracle Peoplesoft Enterprise Peopletools Sep 15, 2026
• High CVE-2026-87258 Improper Access Control in Oracle Agile Product Lifecycle Management Sep 15, 2026
• High CVE-2026-87256 Improper Access Control in Oracle Agile Product Lifecycle Management Sep 15, 2026
• High CVE-2026-87257 Improper Access Control in Oracle Agile Product Lifecycle Management Sep 15, 2026
• Medium CVE-2026-87253 Improper Access Control in Oracle Agile Product Lifecycle Management Sep 15, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

• No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
• No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
• No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2022-23437 is "Infinite loop within Apache XercesJ xml parser", rated Medium. It affects Apache Xerces (Apache Software Foundation); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 6.5 describes technical severity. EPSS 11.62% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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