CVE-2026-13340: The SVG Support WordPress plugin before 2.5.17 does not apply its SVG sanitisation to uploaded files using the .svgz extension, even though it
Source GCVE Database
Not known to be exploited · CVSS 6.1 Medium : upgrade to 2.5.17 when convenient.
Data as of 1 Nov 2026, 22:58 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 16% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 2.5.17
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NExploitation evidence
t = 0 is the CVE’s publication on cve.org
Disclosed: evidence found.
CVE published 3 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CISA SSVC: proof of concept public
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
Timeline
CVE ID reserved
by WPScan
, 39 days before disclosure
CVE published
on cve.org
, t = 0
CISA SSVC assessment
proof of concept public
, 11 hours after disclosure
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA SSVC, the Metasploit, Exploit-DB and nuclei-templates index as of 1 Nov 2026.
What to do
Upgrade SVG Support (WordPress plugin) to 2.5.17.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| SVG Support | Affected
| Fixed in
|
AI-suggested
If you cannot patch yet, restrict SVG upload permissions to trusted users only and consider disabling SVG uploads if possible.
Description
The SVG Support WordPress plugin versions before 2.5.17 fail to sanitize uploaded files with the .svgz extension. Although these files are registered and served as SVGs, the lack of sanitization allows users with SVG upload permissions to upload script-bearing .svgz files. Such files can execute scripts in the browsers of users who view them, including administrators. This vulnerability has a CVSS score of 6.1, indicating a medium severity level.