9.1

CVE-2019-19391: luajit

Modified
AliasesUBUNTU-CVE-2019-19391DEBIAN-CVE-2019-19391openSUSE-SU-2025:15672-1
Published 29-11-2019Last modified 03-11-2025

Vulnerability summary

CVE-2019-19391 is a critical (CVSS 9.1) vulnerability in luajit. EPSS estimates a 1.40% chance of exploitation in the next 30 days, higher than 72.4% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9.1 (NVD); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.1/10
010
Critical · v3.1 (NVD)
EPSS score
1.40%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2
DLA-4283-1MGASA-2026-0225

Timeline

  1. 29-11-2019
    PublishedVulnerability first disclosed.
  2. 03-11-2025
    Last modifiedVulnerability information updated.

Description

In LuaJIT through 2.0.5, as used in Moonjit before 2.1.2 and other products, debug.getinfo has a type confusion issue that leads to arbitrary memory write or read operations, because certain cases involving valid stack levels and > options are mishandled. NOTE: The LuaJIT project owner states that the debug libary is unsafe by definition and that this is not a vulnerability. When LuaJIT was originally developed, the expectation was that the entire debug library had no security guarantees and thus it made no sense to assign CVEs. However, not all users of later LuaJIT derivatives share this perspective

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.40%

Chance of exploitation in the next 30 days

Percentile

72%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.40% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Debian1 product
  • luajit< 2.1.0~beta3+git20210112+dfsg-2
Luajit1 product
Moonjit_project1 product
Opensuse1 product
  • luajit&distro=openSUSE Tumbleweed< 2.1.20250826-1.1
Ubuntu1 product
  • luajit< 2.1.0+git20231223.c525bcb+dfsg-1

5 vendors · 5 products

References

7 links