- 4.3MediumCVSS base score
- 0.84%Exploitation in 30 daysEPSS · top 42% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A vulnerability was found in xml-conduit. It has been classified as problematic. Affected is an unknown function of the file xml-conduit/src/Text/XML/Stream/Parse.hs of the component DOCTYPE Entity Expansion Handler. The manipulation leads to infinite loop. It is possible to launch the attack remotely. Upgrading to version 1.9.1.0 is able to address this issue. The name of the patch is 4be1021791dcdee8b164d239433a2043dc0939ea. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-216204.
Timeline
Published
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| VulDBCNA (assigner) | 3.1 | Medium4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.84% · top 42% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.
Affected products
- affected 0.5.0
- affected 0.5.0.1
- affected 0.5.1
- affected 0.5.1.1
- affected 0.5.1.2
- affected 0.5.2
- affected 0.5.3
- affected 0.5.3.1
- affected 0.5.4
- affected 0.6.0
- affected 0.6.1
- affected 0.7.0
- affected 0.7.0.1
- affected 0.7.0.2
- affected 0.7.0.3
- affected 1.0.0
- affected 1.0.1
- affected 1.0.1.1
- affected 1.0.2
- affected 1.0.2.1
- affected 1.0.3
- affected 1.0.3.1
- affected 1.0.3.2
- affected 1.0.3.3
- affected 1.1.0
- affected 1.1.0.1
- affected 1.1.0.2
- affected 1.1.0.3
- affected 1.1.0.4
- affected 1.1.0.5
- affected 1.1.0.6
- affected 1.1.0.7
- affected 1.1.0.8
- affected 1.1.0.9
- affected 1.2.0
- affected 1.2.0.1
- affected 1.2.0.2
- affected 1.2.0.3
- affected 1.2.1
- affected 1.2.1.1
- and 34 more
References
References4
- https://github.com/snoyberg/xml/pull/161 (opens in a new tab)x_transferred
- https://hackage.haskell.org/package/xml-conduit-1.9.1.0 (opens in a new tab)x_transferred
- https://github.com/snoyberg/xml/commit/4be1021791dcdee8b164d239433a2043dc0939ea (opens in a new tab)x_transferred
- https://vuldb.com/?id.216204 (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2021-34096 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2021-4249)Record last updated .