PatchTheCVECVE-2026-87939: Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal F
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Routine
MEDIUM 4.2
CVE-2026-87939 is a medium-severity flaw (CVSS 4.2) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Feed Block allows Stored XSS. This issue affects Feed Block versions: from 0.0.0 to 2.0.2, from 3.0.0 to 3.0.2.
Why this priority
- No elevated risk signals yet
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 4.2 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.2% (top 96%) |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2026-10-22 |
| Last modified | 2026-10-22 |
Publisher (CNA): Drupal.org
Timeline
- Published CVE record published
- Updated Record last modified
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Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.