Which products and versions are affected by CVE-2021-43857?

Affected: Gerapy versions >= < 0.9.8. The full list is in the CVE brief.

Is CVE-2021-43857 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2021-43857 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2021-43857?

Public exploit code is available.

Is there a fix for CVE-2021-43857?

Fixed versions are available, including Gerapy 0.9.8, Gerapy 49bcb19be5e0320e7e1535f34fe00f16a3cf3b28.

How urgently should CVE-2021-43857 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2021-43857

Q: What is CVE-2021-43857?

Gerapy is a distributed crawler management framework.

Q: Is CVE-2021-43857 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Q: Is CVE-2021-43857 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Q: Is there a public exploit for CVE-2021-43857?

Public exploit code is available.

Q: Is there a fix for CVE-2021-43857?

Fixed versions are available, including Gerapy 0.9.8, Gerapy 49bcb19be5e0320e7e1535f34fe00f16a3cf3b28.

Q: How urgently should CVE-2021-43857 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CriticalPublic exploit

Gerapy may cause remote code execution

Published Jan 6, 2022 · Updated Aug 7, 2026 · Also known as GHSA-9w7f-m4j4-j3xw, PYSEC-2021-867

Key Facts

Patch immediately

CVE-2021-43857 is a critical-severity vulnerability (CVSS 9.3 v4) affecting Gerapy.
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 55% probability of exploitation in the next 30 days.
Fixed versions are available, including Gerapy 0.9.8, Gerapy 49bcb19be5e0320e7e1535f34fe00f16a3cf3b28.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v4

9.3

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

EPSS (30-day exploit likelihood)

55%

Higher than 99.0% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2021-43857 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

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.

Affected Products

3 affected entries in total

Product	Affected versions	Fixed in
GerapyGerapy	>= < 0.9.8	0.9.8

Patched Releases

Gerapy

0.9.8, 49bcb19be5e0320e7e1535f34fe00f16a3cf3b28

Timeline

Publicly disclosed
Jan 6, 2022
Last updated
Aug 7, 2026

Weakness Type

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

References

5 more references in the full CVE brief

FAQ

Common Questions.

Gerapy is a distributed crawler management framework.
Affected: Gerapy versions >= < 0.9.8. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Gerapy 0.9.8, Gerapy 49bcb19be5e0320e7e1535f34fe00f16a3cf3b28.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2021-43857 Running On Your Attack Surface?

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