by Kastro
Paper/Archive/CVE-2026-104711

CVE-2026-104711

Apache Software Foundation Apache Struts — Apache Struts: OGNL injection in the legacy RESTful action mapper

EPSS 1%CVSS 9.8
critical.is priorityof 100
44
CVSS 9.8 (ADP)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 72.3.723 × 2014.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Improper neutralization of special elements used in an expression language statement ('Expression Language Injection') vulnerability in Apache Struts. If the application is configured to use the legacy RESTful action mapper, a crafted request can inject an OGNL expression that may lead to remote code execution. Struts 7 is affected only when the OGNL allowlist is disabled; it is enabled by default. Applications using the default action mapper, the restful2 mapper, or the Struts REST plugin are not affected. This issue affects Apache Struts: from 2.0.0 through 2.3.37, from 2.5.0 through 2.5.33, from 6.0.0 through 6.11.0, from 7.0.0 through 7.3.0. Users are recommended to upgrade to version 6.12.0 or 7.4.0, which fixes the issue.

Affected

ProductAffectedFixed inSource
Apache Struts2.0.0 – 2.3.37–CNA
Apache Struts2.5.0 – 2.5.33–CNA
Apache Struts6.0.0 – 6.11.0–CNA
Apache Struts7.0.0 – 7.3.0–CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

advisorycwiki.apache.org/confluence/display/WW/S2-075refopenwall.com/lists/oss-security/2026/10/05/10