A Java Serialization vulnerability was found in Apache Tapestry 4. Apache Tapestry 4 will attempt to deserialize the "sp" parameter even before invoking the page's validate method, leading to deserialization without authentication. Apache Tapestry 4 reached end of life in 2008 and no update to address this issue will be released. Apache Tapestry 5 versions are not vulnerable to this issue. Users of Apache Tapestry 4 should upgrade to the latest Apache Tapestry 5 version.
Published 2020-12-08 13:15:13
Updated 2023-02-03 19:05:04
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2020-17531

0.78%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 81 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-17531

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.5
HIGH AV:N/AC:L/Au:N/C:P/I:P/A:P
10.0
6.4
NIST
9.8
CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.9
5.9
NIST

CWE ids for CVE-2020-17531

  • The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid.
    Assigned by:
    • nvd@nist.gov (Secondary)
    • security@apache.org (Primary)

References for CVE-2020-17531

Products affected by CVE-2020-17531

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