6.4

CVE-2026-15386: unknown meow gallery Cross-site Scripting

CVSS: 6.4v3.1MediumDeferred
Published 07-08-2026Last modified 07-08-2026
Open JSON

Vulnerability summary

CVE-2026-15386 is a medium (CVSS 6.4) Cross-site Scripting vulnerability in unknown meow gallery. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 12.4% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 5.5.2.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.4/10
010
Medium · v3.1 (wordfence)
EPSS score
0.23%
0%100%
Low · +0.10 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 07-08-2026
    PublishedVulnerability first disclosed.
  2. 07-08-2026
    Last modifiedVulnerability information updated.

Description

The Meow Gallery WordPress plugin before 5.5.2 does not escape an attachment's alt text before outputting it into an attribute of the link it builds for linked galleries, allowing users with the Author role or above to store a JavaScript payload that executes in the browser of any visitor (including administrators) who views a post containing such a gallery.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

12%

Versus all other CVEs

30-day change

+0.10 pp

From 0.13% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.23%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (wpscan.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Unknown1 product
Wordpress1 product
  • meow-gallery≤ 5.5.1 (fixed in 5.5.2)

2 vendors · 2 products

References

2 links