Information disclosure in Apache Tapestry
CVE-2021-27850
A critical unauthenticated remote code execution vulnerability was found all recent versions of Apache Tapestry. The affected versions include 5.4.5, 5.5.0, 5.6.2 and 5.7.0. The vulnerability I have found is a bypass of the fix for CVE-201…
Vulnerability class: Information Disclosure
EPSS: 0.941 (99.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Apache Tapestry
- Apache Software Foundation Tapestry — versions Apache Tapestry 5.5.0, Apache Tapestry 5.7.0, Apache Tapestry 5.4.5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (Mailing List, x_refsource_MISC, Vendor Advisory)
- security@apache.org (mailing-list, x_refsource_MLIST, Exploit, Mailing List, Third Party Advisory)
- security@apache.org (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-27850?
- CVE-2021-27850 is a critical-severity vulnerability in Apache Tapestry, classified under Information Disclosure. CVSS score: 9.8/10. Published 2021-04-15.
- How severe is CVE-2021-27850?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-27850 known to be exploited?
- 31 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.