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PatchSiren cyber security CVE debrief

CVE-2026-34691 Adobe CVE debrief

CVE-2026-34691 is a stored Cross-Site Scripting (XSS) vulnerability in Adobe Experience Manager Forms JEE. Versions LTS SP1, 6.5.24.0 and earlier are affected. An attacker could abuse this vulnerability to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim's browser when they browse to the page containing the vulnerable field, potentially gaining elevated access or control over the victim's account or session.

Vendor
Adobe
Product
Adobe Experience Manager Forms JEE
CVSS
CRITICAL 9.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-08-28
Advisory published
2026-06-09
Advisory updated
2026-08-28

Who should care

Users of Adobe Experience Manager Forms JEE versions LTS SP1, 6.5.24.0 and earlier should apply patches or mitigations to prevent exploitation.

Technical summary

The vulnerability has a CVSS score of 9.3 and is classified as CRITICAL. The CVSS vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N. The weakness is CWE-79.

Defensive priority

high

Recommended defensive actions

  • Apply patches or updates provided by Adobe to vulnerable systems.
  • Implement additional security measures such as input validation and output encoding.
  • Monitor systems for suspicious activity.

Evidence notes

Evidence from NVD and Adobe.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-34691 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-34691

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-34691 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-34691

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.