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TI-2026-70280 Aliases CVE-2026-107323GHSA-pccf-qp9v-4p26

Stored cross-site scripting in Gallery PhotoBlocks plugin

Priority LOW 32CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.

Summary

The Gallery PhotoBlocks WordPress plugin from 1.3.5 before 1.3.6 does not sanitize or escape a gallery setting before writing it into an HTML attribute (CWE-79). A user with Contributor-level access or higher can store JavaScript that runs in the browser of anyone who views a page containing the gallery, including administrators. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

The Gallery PhotoBlocks WordPress plugin before 1.3.6 does not sanitize and escape one of its gallery settings before outputting it into an HTML attribute, allowing users with Contributor-level access and above to store JavaScript that executes in the browser of anyone who views a page containing the gallery, including administrators.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00282 20th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Gallery PhotoBlocks (Unknown): 1.3.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownGallery PhotoBlocks1.3.5 to before 1.3.61.3.6Patch availableCNA
  • Gallery PhotoBlocks VendorUnknown Affected 1.3.5 to before 1.3.6 Fixed in 1.3.6 Patch available CNA

Remediation

Update Gallery PhotoBlocks to version 1.3.6, the fixed version.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA Gallery PhotoBlocks (Unknown) Fixed in 1.3.6

Timeline

  1. 2026-10-10 Threatist record created from CVE-2026-107323
  2. 2026-10-10 Alias added: GHSA-pccf-qp9v-4p26
  3. 2026-10-11 CVSS score added · CISA ADP
  4. 2026-10-11 Weakness changed · CISA ADP
  5. 2026-10-11 CISA SSVC decision points changed

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences