CVE-2026-129140

MEDIUM 5.4

paicoding 1.0.0 through 1.0.3 Stored XSS via SVG Image Upload

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

paicoding 1.0.0 through 1.0.3 contains a stored cross-site scripting vulnerability in image upload because ImageServiceImpl.validateStaticImg accepts SVG files, which are then served from the site origin when local storage is used. Authenticated attackers can upload script-bearing SVG images that execute when victims view them, stealing the non-HttpOnly f-session cookie to hijack accounts.

CWE	CWE-79
Vendor	itwanger
Product	paicoding
Published	Nov 13, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

itwanger / paicoding

1.0.0 ≤ 1.0.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vul.yulun.ac.cn: https://vul.yulun.ac.cn/20261112/paicoding/ github.com: https://github.com/itwanger/paicoding/issues/137 github.com: https://github.com/itwanger/paicoding/blob/903adce70309d340f7eec51ec3c80cfe3c8326c1/paicoding-service/src/main/java/com/github/paicoding/forum/service/image/service/ImageServiceImpl.java#L174-L180 vulncheck.com: https://www.vulncheck.com/advisories/paicoding-1.0.0-through-1.0.3-stored-xss-via-svg-image-upload

Credits

Wu Yulun