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Fencer Vulns
critical 9.8

CVE-2021-43857 in the critical feed json

Gerapy may contain remote code execution vulnerability

published 2021-12-27 4 y ago modified 2026-07-08 4 mo ago also GHSA-9w7f-m4j4-j3xw , PYSEC-2021-867 , EUVD-2021-0092

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
55.6%
EPSS 55.6% chance of exploitation in 30 days, percentile 99%
public exploits
1
Exploit-DB

Summary

Gerapy is a distributed crawler management framework. Gerapy prior to version 0.9.8 is vulnerable to remote code execution, and this issue is patched in version 0.9.8.

Patch / fix

  • pypi gerapy 0.9.8
  • gerapy gerapy 0.9.8

Timeline

  1. Published
  2. First public exploit (EDB-50640)

Exploit prediction

55.61% chance of exploitation in the next 30 days, higher than 99% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-50640 Gerapy 0.9.7 - Remote Code Execution (RCE) (Authenticated) remote, 2022-01-05
  • packetstormsecurity.com http://packetstormsecurity.com/files/165459/Gerapy-0.9.7-Remote-Code-Execution.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
pypi gerapy
<0.9.8
0.9.8

Affected products

  • Gerapy Gerapy

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.