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2 vulnerabilities by hasenbanck
CVE-2026-61725 (GCVE-0-2026-61725)
Vulnerability from nvd – Published: 2026-10-30 22:10 – Updated: 2026-11-02 14:46
VLAI
EPSS
VEX
Title
sevenz-rust2: unchecked 7z entry paths permit traversal and absolute-path file overwrites
Summary
sevenz-rust2 is a Rust-native 7z compressor and `decompress`or. Prior to 0.21.1, extracting an attacker-supplied 7z archive can write or overwrite files outside the destination directory. In `src/util/decompress.rs`, `decompress_impl` computes each destination with `dest.join(entry.name())` without normalizing the archive's UTF-16 entry name or verifying containment, and `default_entry_extract_fn` writes to it with `File::create`. Parent-directory components escape the extraction root, and an absolute entry path makes the join discard the destination entirely. The convenience entry points `decompress`, `decompress_file`, `decompress_with_password`, and `decompress_file_with_password` all use this default path. Overwriting writable configuration, startup, cron, or build files can lead to code execution or persistence. The archive bytes are the attacker-controlled trust boundary, including for applications that automatically unpack uploaded or otherwise untrusted archives. This issue is fixed in version 0.21.1.
Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-02 14:45 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/hasenbanck/sevenz-rust2/securi… | x_refsource_CONFIRM |
| https://github.com/hasenbanck/sevenz-rust2/commit… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| hasenbanck | sevenz-rust2 |
Affected:
< 0.21.1
|
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CVE-2026-61725 (GCVE-0-2026-61725)
Vulnerability from cvelistv5 – Published: 2026-10-30 22:10 – Updated: 2026-11-02 14:46
VLAI
EPSS
VEX
Title
sevenz-rust2: unchecked 7z entry paths permit traversal and absolute-path file overwrites
Summary
sevenz-rust2 is a Rust-native 7z compressor and `decompress`or. Prior to 0.21.1, extracting an attacker-supplied 7z archive can write or overwrite files outside the destination directory. In `src/util/decompress.rs`, `decompress_impl` computes each destination with `dest.join(entry.name())` without normalizing the archive's UTF-16 entry name or verifying containment, and `default_entry_extract_fn` writes to it with `File::create`. Parent-directory components escape the extraction root, and an absolute entry path makes the join discard the destination entirely. The convenience entry points `decompress`, `decompress_file`, `decompress_with_password`, and `decompress_file_with_password` all use this default path. Overwriting writable configuration, startup, cron, or build files can lead to code execution or persistence. The archive bytes are the attacker-controlled trust boundary, including for applications that automatically unpack uploaded or otherwise untrusted archives. This issue is fixed in version 0.21.1.
Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-02 14:45 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/hasenbanck/sevenz-rust2/securi… | x_refsource_CONFIRM |
| https://github.com/hasenbanck/sevenz-rust2/commit… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| hasenbanck | sevenz-rust2 |
Affected:
< 0.21.1
|
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