Vulnerability in Apache Commons_compress

CVE-2021-35515

When reading a specially crafted 7Z archive, the construction of the list of codecs that decompress an entry can result in an infinite loop. This could be used to mount a denial of service attack against services that use Compress' sevenz…

EPSS: 0.119 (95.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2021-35515?
CVE-2021-35515 is a high-severity vulnerability in Apache Commons_compress, classified under Excessive Iteration. CVSS score: 7.5/10. Published 2021-07-13.
How severe is CVE-2021-35515?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2021-35515 known to be exploited?
6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.