CVE-2026-77114 Document Gallery WordPress plugin - Stored XSS

Document Gallery WordPress plugin <= 5.1.1 contains a stored cross-site scripting caused by insufficient input sanitization and output escaping in 'dg_thumber_webhook' action request body, letting unauthenticated attackers inject scripts that execute when users access injected pages, exploit requires logging enabled in plugin's Advanced settings.

CVSS base score 7.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.31% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Stored XSS
Impact
Stored XSS
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Published
14 October 2026
Updated
15 October 2026
Weakness
CWE-79

Vendor fix

Update to a version later than 5.1.1 or apply patches that fix input sanitization and output escaping.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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