CVE-2026-13723: Develar app-builder · Path Traversal
Affects Develar app-builderSource CVE Database V5
Not known to be exploited · CVSS 6.5 Medium.
Data as of 28 Oct 2026, 05:11 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 41% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:LExploitation evidence
Disclosed: evidence found.
CVE published 29 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Develarapp-builder | Affected
| Fixed in– |
AI-suggested
Until a fix is available, avoid extracting untrusted ZIP archives with Develar app-builder on macOS APFS systems or use alternative extraction tools that properly handle Unicode normalization and symlinks.
Description
CVE-2026-13723 is a path traversal vulnerability in Develar's app-builder affecting versions up to 4.2.0. It arises from improper handling of Unicode normalization in the zipx.Unzip extraction routine on macOS APFS. An attacker can craft a ZIP archive with a symlink named 'ss' and a file named 'ß' that exploits APFS's Unicode equivalence to overwrite arbitrary files by following the symlink during extraction.