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.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Wed, 08 Jul 2026 16:45:00 +0000
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| First Time appeared |
Black Lantern Security
Black Lantern Security bbot |
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| Vendors & Products |
Black Lantern Security
Black Lantern Security bbot |
Wed, 08 Jul 2026 16:30:00 +0000
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| Metrics |
ssvc
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Wed, 08 Jul 2026 15:45:00 +0000
| Type | Values Removed | Values Added |
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| 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. | |
| Title | Symlink guard bypass in unarchive module allows planting symlinks during extraction | |
| Weaknesses | CWE-59 | |
| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: BLSOPS
Published:
Updated: 2026-07-08T15:57:12.247Z
Reserved: 2026-07-07T15:14:09.717Z
Link: CVE-2026-14966
Updated: 2026-07-08T15:57:09.771Z
No data.
No data.
OpenCVE Enrichment
Updated: 2026-07-08T16:30:04Z
Weaknesses