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Vulnerabilities

Vulnerability · CVE-2026-32733

Halloy is an IRC application written in Rust.

Published Mar 20, 2026 · catalog updated Jun 17, 2026 · Halloy is an IRC

Check if you run it

No confirmed exploitation is on record for CVE-2026-32733. EPSS is 0.47%. Act only if a listed version of Halloy is an IRC is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Halloy is an IRC).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.47%
Remediation
Advisory link
Affected products
cpe halloy/halloy

Halloy is an IRC application written in Rust. Prior to commit 0f77b2cfc5f822517a256ea5a4b94bad8bfe38b6, the DCC receive flow did not sanitize filenames from incoming requests. A remote IRC user could send a filename with path traversal sequences like and the file would be written outside the user's configured . With auto-accept enabled this required zero interaction from the victim. Starting with commit 0f77b2cfc5f822517a256ea5a4b94bad8bfe38b6, all identified code paths sanitize filenames through a shared function.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe halloy/halloyversion unspecified

How to fix CVE-2026-32733

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-32733. EPSS is 0.47%. Act only if a listed version of Halloy is an IRC is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-22: Path Traversal. EPSS 0.47%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 20, 2026 · NIST NVD

    Detected

    Halloy is an IRC application written in Rust. Prior to commit 0f77b2cfc5f822517a256ea5a4b94bad8bfe38b6, the DCC receive flow did not sanitize filenames from incoming requests. A remote IRC user could send a filename with path traversal sequences like and the file would be written outside the user's configured . With auto-accept enabled this required zero interaction from the victim. Starting with

  2. Jun 17, 2026 · NIST NVD

    Updated

    Halloy is an IRC application written in Rust. Prior to commit 0f77b2cfc5f822517a256ea5a4b94bad8bfe38b6, the DCC receive flow did not sanitize filenames from incoming requests. A remote IRC user could send a filename with path traversal sequences like and the file would be written outside the user's configured . With auto-accept enabled this required zero interaction from the victim. Starting with

Sources

  • CVE.orgVulnerability recordCVE-2026-32733

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-32733

    30-day exploitation probability 0.5%

    first.org
  • NIST NVDVulnerability recordCVE-2026-32733

    Halloy is an IRC application written in Rust. Prior to commit 0f77b2cfc5f822517a256ea5a4b94bad8bfe38b6, the DCC receive flow did not sanitize filenames from incoming requests. A remote IRC user could send a filename with path traversal sequences like `../../.ssh/author

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.