Vulnerability · Published Jul 8, 2026 · Assigned by BLSOPS
CVE-2026-14966Symlink guard bypass in unarchive module allows planting symlinks during extraction
Low 3.1
In plain English
A low-severity security flaw in BBOT from Black Lantern Security. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
BBOT's unarchive module rejects archives containing symlink entries before extraction, but for zip and 7z archives it failed to detect symlinks whose listing carries a DOS-attribute prefix before the unix mode, as produced by legacy versions of p7zip. Such an archive, downloaded and extracted during a scan (for example via filedownload), bypassed the guard and caused an attacker-controlled symlink to be written into the extraction directory. The effect is limited to planting the symlink (its target is not written through), and only hosts using such a legacy p7zip build are affected; current mainline 7-Zip is not.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | bbot | 3.0.0 | GHSA-xpf3-p7gm-7756 |
| PyPI | bbot | 3.0.0 | PYSEC-2026-3719 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Black Lantern Security | BBOT | 2.3.1 – through 2.8.6 |
Weakness: CWE-59 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N