CVE-2026-45090: hahwul dalfox · Race Condition
Affects hahwul dalfoxSource CVE Database V5
Not known to be exploited · CVSS 7.5 High : upgrade to 2.13.0 soon.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 19% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 2.13.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 27 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade dalfox and github.com/hahwul/dalfox to 2.13.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| hahwuldalfox | Affected
| Fixed in
|
Gogithub.com/hahwul/dalfoxpkg:golang/github.com/hahwul/dalfoxOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
This vulnerability is fixed in dalfox version 2.13.0. Users should upgrade to version 2.13.0 or later to remediate this issue. Until upgrading, avoid running dalfox in server mode with the default configuration lacking an API key, or restrict access to the REST API to trusted users only. Patch status is not explicitly stated in vendor advisory content, but the fix is included in version 2.13.0.
Description
CVE-2026-45090 is a race condition vulnerability in hahwul dalfox versions prior to 2.13.0. The issue arises because two sequential worker stages write to the same results channel, which is closed after the first stage, causing the second stage to write to a closed channel. This triggers a Go runtime panic that crashes the dalfox process. In server mode, this crash can be remotely triggered by unauthenticated callers via the REST API if the default configuration is used without an API key and the attacker supplies POST-body data that is reflected by the target. The vulnerability is fixed in version 2.13.0.