xml-conduit DOCTYPE Entity Expansion Parse.hs infinite loop
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-404.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| unspecified | xml-conduit | 0.5.0; 0.5.0.1; 0.5.1; 0.5.1.1; 0.5.1.2; 0.5.2; 0.5.3; 0.5.3.1; 0.5.4; 0.6.0; 0.6.1; 0.7.0; 0.7.0.1; 0.7.0.2; 0.7.0.3; 1.0.0; 1.0.1; 1.0.1.1; 1.0.2; 1.0.2.1; 1.0.3; 1.0.3.1; 1.0.3.2; 1.0.3.3; 1.1.0; 1.1.0.1; 1.1.0.2; 1.1.0.3; 1.1.0.4; 1.1.0.5; 1.1.0.6; 1.1.0.7; 1.1.0.8; 1.1.0.9; 1.2.0; 1.2.0.1; 1.2.0.2; 1.2.0.3; 1.2.1; 1.2.1.1; 1.2.2; 1.2.3; 1.2.3.1; 1.2.3.2; 1.2.3.3; 1.2.4; 1.2.5; 1.2.5.1; 1.2.6; 1.3.0; 1.3.1; 1.3.2; 1.3.3; 1.3.3.1; 1.3.4; 1.3.4.1; 1.3.4.2; 1.3.5; 1.4.0; 1.4.0.1; 1.4.0.2; 1.4.0.3; 1.4.0.4; 1.5.0; 1.5.1; 1.6.0; 1.7.0; 1.7.0.1; 1.7.1.0; 1.7.1.1; 1.7.1.2; 1.8.0; 1.8.0.1; 1.9.0.0 | — | No fix listed | CNA |
- xml-conduit Vendorunspecified Affected 0.5.0; 0.5.0.1; 0.5.1; 0.5.1.1; 0.5.1.2; 0.5.2; 0.5.3; 0.5.3.1; 0.5.4; 0.6.0; 0.6.1; 0.7.0; 0.7.0.1; 0.7.0.2; 0.7.0.3; 1.0.0; 1.0.1; 1.0.1.1; 1.0.2; 1.0.2.1; 1.0.3; 1.0.3.1; 1.0.3.2; 1.0.3.3; 1.1.0; 1.1.0.1; 1.1.0.2; 1.1.0.3; 1.1.0.4; 1.1.0.5; 1.1.0.6; 1.1.0.7; 1.1.0.8; 1.1.0.9; 1.2.0; 1.2.0.1; 1.2.0.2; 1.2.0.3; 1.2.1; 1.2.1.1; 1.2.2; 1.2.3; 1.2.3.1; 1.2.3.2; 1.2.3.3; 1.2.4; 1.2.5; 1.2.5.1; 1.2.6; 1.3.0; 1.3.1; 1.3.2; 1.3.3; 1.3.3.1; 1.3.4; 1.3.4.1; 1.3.4.2; 1.3.5; 1.4.0; 1.4.0.1; 1.4.0.2; 1.4.0.3; 1.4.0.4; 1.5.0; 1.5.1; 1.6.0; 1.7.0; 1.7.0.1; 1.7.1.0; 1.7.1.1; 1.7.1.2; 1.8.0; 1.8.0.1; 1.9.0.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2021-4249
- 2026-10-03 Alias added: GHSA-r5mv-3cq3-727q
References
Sources
- CVE-2021-4249 · CVE Program
- CVE-2021-4249 · NVD
- FIRST EPSS
- GHSA-r5mv-3cq3-727q · GitHub Advisory Database · CC BY 4.0
- CVE-2021-4249 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences