AntSword: Incomplete noxss() sanitization leads to 1-click RCE via jquery.terminal format code injection

published 2026-05-12 5 mo ago modified 2026-10-26 13 d ago also EUVD-2026-29721

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 17%
public exploits: 0; none known

AntSword is a cross-platform website management toolkit. Prior to 2.1.16, incomplete noxss() sanitization leads to 1-click RCE via jquery.terminal format code injection. This vulnerability is fixed in 2.1.16.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 5 mo ago (2026-05-13)

Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

AntSwordProject antSword

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation
CWE-94 Improper Control of Generation of Code
CWE-1188 Initialization of a Resource with an Insecure Default

References

github.com /AntSwordProject/antSword/security/advisories/GHSA-c63g-p4cp-r45x

Sources

CVE List CVE-2026-43892
NVD CVE-2026-43892

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary