CVE-2025-43954 json
QMarkdown Cross-Site Scripting (XSS) vulnerability
published 2025-04-20 18 mo ago modified 2026-06-17 4 mo ago also GHSA-wm65-ph3w-587c , EUVD-2025-11952
- cvss
- 4.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 11%
- public exploits
- 0
- none known
Summary
QMarkdown (aka quasar-ui-qmarkdown) before 2.0.5 allows XSS via headers even when when no-html is set.
Patch / fix
- npm @quasar/quasar-ui-qmarkdown 2.0.5
- Quasar QMarkdown 2.0.5
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 18 mo ago
Exploit prediction
0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| GitHub | 3.1 | 4.9 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | @quasar/quasar-ui-qmarkdown | <2.0.5 |
2.0.5 |
Affected products
- Quasar QMarkdown
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/quasarframework/quasar-ui-qmarkdown/commit/b61dff84851c45369cf931db5bd93db177c657f6
web, patch
-
github.com
/quasarframework/quasar-ui-qmarkdown/compare/v2.0.4...v2.0.5
web, patch, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2025-43954
advisory
-
github.com
/quasarframework/quasar-ui-qmarkdown
package
Sources
- CVE List CVE-2025-43954
- GitHub Advisory GHSA-wm65-ph3w-587c
- NVD CVE-2025-43954
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.