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CVE-2021-4164
calibre-web is vulnerable to Cross-Site Request Forgery (CSRF)
Summary
calibre-web is vulnerable to Cross-Site Request Forgery (CSRF)
AI summary snake-internal / snake-template-v1
A weakness called CVE-2021-4164 was discovered in the affected product.
In plain terms, it is a CSRF flaw that lets attackers act as the victim.
Severity is Info. Low severity or not yet rated.
What you should do: update the affected software to the latest version. If unsure, ask your IT team or search the vendor's site for "the product CVE-2021-4164".
CVE-2021-4164 (the affected product). Severity: Info. Category: CWE-352.
Response plan:
1. Check the vendor advisory for affected versions and the patched release.
2. If a vulnerable version is running in production, schedule maintenance (urgency from KEV/CVSS).
3. If no patch yet, mitigate via WAF rule, disabling the affected feature, etc.
4. Monitor logs / SIEM for known IOC and PoC signatures of this CVE.
PoCs and fix commits: see the 'References' section, MITRE, and NVD.
❓ What is the problem
A weakness (CVE-2021-4164) in the affected product. In plain words, it is a CSRF flaw that lets attackers act as the victim.
📍 Affected scope
Target versions of the affected product (see vendor advisory). If running in production, identify exposure immediately.
🔥 Severity
Severity: Info. Low severity or not yet rated.
🔧 How to fix
Update to the patched release as listed in the vendor advisory. (Typical mitigation pattern for CWE-352)
🛡️ Workaround
If a patch is not yet available, consider disabling the affected feature, applying WAF rules, blocking via network ACLs, or isolating the vulnerable version.
🔍 Detection
Check version information, scan dependencies via SBOM, and monitor SIEM for IOC and PoC signatures related to this CVE.
Affected packages
PyPI
calibreweb
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.6.15"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2021-4164
- advisory https://github.com/advisories/GHSA-wxr6-29pv-ch68
- package https://github.com/janeczku/calibre-web
- package https://pypi.org/project/calibreweb
- patch https://github.com/janeczku/calibre-web/commit/785726deee13b4d56f6c3503dd57c1e3eb7d6f30
- report https://huntr.dev/bounties/2debace1-a0f3-45c1-95fa-9d0512680758