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Fencer Vulns
critical 9.8

CVE-2020-11722 json

Dungeon Crawl Stone Soup (aka DCSS or crawl) before 0.25 allows remote attackers to execute arbitrary code via Lua bytecode embedded in an…

published 2020-04-12 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-4064

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.9%
EPSS 3.9% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

Dungeon Crawl Stone Soup (aka DCSS or crawl) before 0.25 allows remote attackers to execute arbitrary code via Lua bytecode embedded in an uploaded .crawlrc file.

Patch / fix

  • dungeon_crawl_stone_soup_project dungeon_crawl_stone_soup 0.25
  • crawl Debian 14, Debian 13, Debian 12 2:0.25.0-1

debian advisories DEBIAN-CVE-2020-11722

  • crawl Ubuntu Pro 16.04 LTS 2:0.17.1-1ubuntu0.1~esm1
  • crawl Ubuntu Pro 18.04 LTS 2:0.21.1-1ubuntu0.1~esm1
  • crawl Ubuntu Pro 20.04 LTS 2:0.24.0-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2020-11722

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • crawl openSUSE Tumbleweed 0.26.1-1.2
  • crawl Package Hub 15 SP1, openSUSE Leap 15.1 0.24.0-bp151.4.3.2

opensuse advisories openSUSE-SU-2024:10698-1openSUSE-SU-2020:0549-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-11722 updated cvss 9.8

crawl: a remote attacker may execute arbitrary code via Lua bytecode

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.89% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-434 Unrestricted Upload of File with Dangerous Type

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.