CVE-2016-3081
Exploitation confirmed. First attested on 2026-07-23 by CISA-ADP, CISA KEV, GCVE · kevintel.
- Published2016-04-26
- WeaknessCWE-77
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « 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
Apache Struts 2.3.19 to 2.3.20.2, 2.3.21 to 2.3.24.1, and 2.3.25 to 2.3.28, when Dynamic Method Invocation is enabled, allow remote attackers to execute arbitrary code via method: prefix, related to chained expressions.
Timeline
dates in UTCObserved activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2016-3081?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2016-3081?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 2.0 | = 2.0.0.0 | no fix published | NVD |
| 2.0 | = 2.0.1 | no fix published | NVD |
| 2.2 | = 2.2.0 | no fix published | NVD |
| 12.0 | = 12.0.1 | no fix published | NVD |
| 12.0 | = 12.0.3 | no fix published | NVD |
| 12.1 | = 12.1.0 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 10.0 | = 10.0.1 | no fix published | NVD |
| 10.5 | = 10.5.0 | no fix published | NVD |
| 10.6 | = 10.6.0 | no fix published | NVD |
| 10.7 | = 10.7.0 | no fix published | NVD |
| 10.8 | = 10.8.0 | no fix published | NVD |
| 10.8 | = 10.8.1 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 300.x | = v300r001 | no fix published | NVD |
| 300.x | = v300r002 | no fix published | NVD |
| 300.x | = v300r003c00 | no fix published | NVD |
| 300.x | = v300r003c10 | no fix published | NVD |
17 more products in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- CISA’s required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.due 2026-10-11
Advisories and patches
- www.oracle.comPatch
- struts.apache.orgPatch · Vendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
CISA Known Exploited Vulnerability
- Date Added
- 2026-10-08
- Patch Due Date
- 2026-10-11
- Ransomware Use
- Unknown
- Required Action
- Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Sources
- CISA KEVKEV entry2026-10-08
- GCVEexploitation2026-07-23
- CISA-ADPSSVC decisionactive2026-10-08
- OpenCVESSVC decisionactive—
- CISA-ADPCVSS 3.18.12026-10-08
- NVDCVSS 3.18.1read 2026-10-23
- NVDCVSS 2.09.3read 2026-10-23
- CISA-ADPweakness (CWE)CWE-772026-10-08
- NVDweakness (CWE)CWE-77read 2026-10-23
- FIRST EPSSEPSS score96.1 %read 2026-10-23
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2016-04-26
- Last Modified
- 2026-10-09
- NVD status
- Analyzed
Frequently asked questions
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Related vulnerabilities
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