What is CVE-2023-22898?

CVE-2023-22898 is a medium-severity vulnerability in Circl Pandora, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2023-01-10.

How severe is CVE-2023-22898?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Improper input validation in Circl Pandora

CVE-2023-22898

workers/extractor.py in Pandora (aka pandora-analysis/pandora) 1.3.0 allows a denial of service when an attacker submits a deeply nested ZIP archive (aka ZIP bomb).

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2023-01-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.006 (47.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000

Affected products

Circl Pandora

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

github.com/pandora-analysis/pandora/commit/1dc06327fdc07c56eae653e497dd137ec70d… (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2023-22898?: CVE-2023-22898 is a medium-severity vulnerability in Circl Pandora, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2023-01-10.
How severe is CVE-2023-22898?: Medium severity. CVSS v3 base score is 6.5 out of 10.