CVE-2021-36691: libjxl_project libjxl Reachable Assertion
CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2021-36691DEBIAN-CVE-2021-36691
Published 30-08-2021Last modified 04-08-2024
Vulnerability summary
CVE-2021-36691 is a high (CVSS 7.5) Reachable Assertion vulnerability in libjxl_project libjxl. EPSS estimates a 1.07% chance of exploitation in the next 30 days, higher than 64.3% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
1.07%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 30-08-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
libjxl v0.5.0 is affected by a Assertion failed issue in lib/jxl/image.cc jxl::PlaneBase::PlaneBase(). When encoding a malicous GIF file using cjxl, an attacker can trigger a denial of service.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
1.07%
Chance of exploitation in the next 30 days
Percentile
64%
Versus all other CVEs
30-day change
0.00 pp
From 1.07% on 18-09-2026
18-09-202618-10-2026
EPSS score1.07%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundLibjxl
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Debian1 product
- jpeg-xlAll versions (No fix recorded)
Libjxl_project1 product
- libjxl0.5.0
Ubuntu1 product
- jpeg-xlAll versions (No fix recorded)
3 vendors · 3 products
