CVE-2023-30300: w3 webassembly Infinite Loop
CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2023-30300DEBIAN-CVE-2023-30300
Published 03-05-2023Last modified 30-01-2025
Vulnerability summary
CVE-2023-30300 is a medium (CVSS 5.5) Infinite Loop vulnerability in w3 webassembly. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 19.8% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)EPSS score
0.28%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 03-05-2023PublishedVulnerability first disclosed.
- 30-01-2025Last modifiedVulnerability information updated.
Description
An issue in the component hang.wasm of WebAssembly 1.0 causes an infinite loop.
CVSS metrics
4 scores · 4 sources · 1 versionMedium 5.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.28%
Chance of exploitation in the next 30 days
Percentile
20%
Versus all other CVEs
30-day change
0.00 pp
From 0.28% on 21-09-2026
21-09-202621-10-2026
EPSS score0.28%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundWabt
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Debian1 product
- wabtAll versions (No fix recorded) | < 1.0.33-1
Ubuntu1 product
- wabtAll versions (No fix recorded)
W31 product
- webassembly1.0
3 vendors · 3 products
References
7 links- lists.fedoraproject.org/archives/…Vendor Advisory
