Description
The ZipCommon::isValidPath() function in Zip/src/ZipCommon.cpp in POCO C++ Libraries before 1.8 does not properly restrict the filename value in the ZIP header, which allows attackers to conduct absolute path traversal attacks during the ZIP decompression, and possibly create or overwrite arbitrary files, via a crafted ZIP file, related to a "file path injection vulnerability".
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | poco | 1.8.0-2 | — |
| Debian 13 | poco | 1.8.0-2 | — |
| Debian 12 | poco | 1.8.0-2 | — |
| Debian 9 | poco | 1.7.6+dfsg1-5+deb9u1 | DSA-4083-1 |
| Debian 8 | poco | 1.3.6p1-5+deb8u1 | DSA-4083-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | poco | 1.3.6p1-4+deb7u1 | DLA-1239-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | poco | 1.3.6p1-5.1ubuntu0.1 | — |
| Ubuntu 14.04 LTS | poco | 1.3.6p1-4+deb7u1build1 | — |
Advisories 2
- DSA-4083-1 poco - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1239-1 poco - security update Debian Security (DSA / DLA) · Mar 9, 2026