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CVE-2021-43857

70
FAUCET Score

CVE-2021-43857 is a remote code execution (RCE) vulnerability affecting Gerapy, a distributed crawler management framework, in versions prior to 0.9.8. This high-severity vulnerability (CVSS 8.8) allows an authenticated attacker to execute arbitrary code remotely with low attack complexity, leading to high impacts on confidentiality, integrity, and availability. While not listed in CISA's KEV catalog, an authenticated exploit (EDB-50640) is publicly available, though there is no evidence of widespread active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.9.8CPE matchmatch criteria
cpe:2.3:a:gerapy:gerapy:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
55.33%
Probability of exploitation in next 30 days
EPSS Percentile
98.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-50640 · Jan 5, 2022
This CVE's current EPSS score of 0.5533 is in the 98th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: gerapyFixed in: 0.9.8

Vendor Advisories (1)

pipGHSA-9w7f-m4j4-j3xwcritical

Gerapy may cause remote code execution

Jan 6, 2022

References

packetstormsecurity.com / files/165459/Gerapy-0.9.7-Remote-Code-Execution.html
ExploitThird Party Advisory
github.com / Gerapy/Gerapy/commit/49bcb19be5e0320e7e1535f34fe00f16a3cf3b28
PatchThird Party Advisory
github.com / Gerapy/Gerapy/issues/219
Issue TrackingThird Party Advisory
github.com / Gerapy/Gerapy/security/advisories/GHSA-9w7f-m4j4-j3xw
Third Party Advisory