bottle HTTP Request smuggling
The package bottle before 0.12.19 are vulnerable to Web Cache Poisoning by using a vector called parameter cloaking. When the attacker can separate query parameters using a semicolon (;), they can cause a difference in the interpretation of the request between the proxy (running with default configuration) and the server. This can result in malicious requests being cached as completely safe ones, as the proxy would usually not see the semicolon as a separator, and therefore would not include it in a cache key of an unkeyed parameter.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | bottle | < 0.12.19 | 0.12.19 |
References
- https://snyk.io/vuln/SNYK-PYTHON-BOTTLE-1017108
- https://github.com/bottlepy/bottle
- https://snyk.io/blog/cache-poisoning-in-popular-open-source-packages/
- https://lists.debian.org/debian-lts-announce/2021/01/msg00019.html
- https://github.com/advisories/GHSA-qhx9-7hx7-cp4r
- https://nvd.nist.gov/vuln/detail/CVE-2020-28473
- https://github.com/bottlepy/bottle/commit/57a2f22e0c1d2b328c4f54bf75741d74f47f1a6b
- https://github.com/pypa/advisory-database/tree/main/vulns/bottle/PYSEC-2021-129.yaml
- https://snyk.io/blog/cache-poisoning-in-popular-open-source-packages
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H- Weakness (CWE)
CWE-444- Platform
- Python (PyPI)
- Package
bottle- Disclosed
- 18.01.2021
- Updated
- 11.10.2026 11:19
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2021-129 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-qhx9-7hx7-cp4r - CC BY 4.0
Vulnerability history: bottle
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 4
- First → latest
- 10.2014 06.2022
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 2
- Medium 1
Disclosures per year
- 2017: 0
- 2018: 0
- 2019: 0
- 2020: 0
- 2021: 1
- 2022: 1
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
earlier: 2
-
bottle HTTP Request smuggling this entry
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