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CVE-2026-121721VulnerabilityPublished

PublishPress · Cross-site Scripting

Source GCVE Database

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Authoritative record:CVE-2026-121721· Medium 6.5

Not known to be exploited · CVSS 6.5 Medium.

Data as of 13 Nov 2026, 16:49 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (Patchstack)CVSS 3.16.5
Affects
PublishPress Gutenberg Blocks up to 3.7.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

AI-suggested

Until a fix is available, users should apply standard mitigations for stored XSS vulnerabilities, such as restricting user input and employing web application firewalls where possible.

Description

A stored cross-site scripting (XSS) vulnerability exists in PublishPress Gutenberg Blocks up to version 3.7.6. This vulnerability is due to improper neutralization of input during web page generation, allowing attackers with low privileges to inject malicious scripts that can execute in the context of other users. The vulnerability has a CVSS 3.1 base score of 6.5, indicating a medium severity impact with potential confidentiality, integrity, and availability consequences.

References

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