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CVE-2021-41171

27
FAUCET Score

CVE-2021-41171 affects eLabFTW versions prior to 4.1.0, allowing attackers to bypass brute-force protection by manipulating PHPSESSID values. This vulnerability carries a high CVSS score of 8.8, indicating it can be exploited remotely with low complexity to achieve high impact on confidentiality, integrity, and availability. While no active exploitation, public exploit code, or significant community discussion has been observed, upgrading to version 4.1.0 or implementing upstream rate limiting is crucial to mitigate this risk.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.1.0CPE matchmatch criteria
cpe:2.3:a:elabftw:elabftw:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.88%
Probability of exploitation in next 30 days
EPSS Percentile
77.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0188 is in the 76th percentile among its peer group of 17,829 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 (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / elabftw/elabftw/commit/8e92afeec4c3a68dc88333881b7e6307f425706b
PatchThird Party Advisory
github.com / elabftw/elabftw/releases/tag/4.1.0
Release NotesThird Party Advisory
github.com / elabftw/elabftw/security/advisories/GHSA-q67h-5pc3-g6jv
Third Party Advisory
owasp.org / www-community/Slow_Down_Online_Guessing_Attacks_with_Device_Cookies
Third Party Advisory
exploit-db.com / docs/50436
ExploitThird Party AdvisoryVDB Entry