7.5

CVE-2021-4249: haskell xml-conduit Improper Resource Shutdown or Release

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2021-4249DEBIAN-CVE-2021-4249openSUSE-SU-2026:11086-1
Published 18-12-2022Last modified 15-04-2025
Open JSON

Vulnerability summary

CVE-2021-4249 is a high (CVSS 7.5) Improper Resource Shutdown or Release vulnerability in haskell xml-conduit. EPSS estimates a 0.84% chance of exploitation in the next 30 days, higher than 57.1% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.84%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 18-12-2022
    PublishedVulnerability first disclosed.
  2. 15-04-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.84%

Chance of exploitation in the next 30 days

Percentile

57%

Versus all other CVEs

30-day change

+0.05 pp

From 0.80% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.84%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • haskell-xml-conduit< 1.9.1.1-1
Haskell1 product
Opensuse1 product
  • ghc-xml-conduit&distro=openSUSE Tumbleweed< 1.10.1.0-2.1
Ubuntu1 product
  • haskell-xml-conduitAll versions (No fix recorded)
Unspecified1 product
  • xml-conduit0.5.0 | 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

5 vendors · 5 products

References

8 links