CVE-2016-2087

high

Published 2017-01-18 · Modified 2026-05-13

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

7.4

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS v4 NEW

—

not yet in upstream

VIR risk

8.4

Description

Directory traversal vulnerability in the client in HexChat 2.11.0 allows remote IRC servers to read or modify arbitrary files via a .. (dot dot) in the server name.

Predictions

Exploit likelihood

82%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-39656 local multiple

PizzaHatHacker · 2016-04-04

Hexchat IRC Client 2.11.0 - Directory Traversal

Source code queued for fetch — refresh in a moment.

OS impact

OS	Version	Status	Fixed in
sles		affected
debian	bookworm	fixed	`2.12.4-4`
debian	bullseye	fixed	`2.12.4-4`
debian	sid	fixed	`2.12.4-4`
debian	trixie	fixed	`2.12.4-4`

Application impact

Vendor	Product	Versions	Fixed
hexchat_project	hexchat	`2.11.0`

References

CWEs

CWE-22

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.