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CVE-2021-41826

36
FAUCET Score

CVE-2021-41826 is an open redirect vulnerability affecting the PlaceOS Authentication Service, specifically versions prior to 1.29.10.0. This medium-severity vulnerability (CVSS 6.1) allows an unauthenticated attacker to redirect users to arbitrary malicious sites, potentially leading to phishing or credential theft, requiring user interaction. While not currently in the KEV catalog or actively exploited, a Nuclei template exists for detection, and there is no significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.29.10.0CPE matchmatch criteria
cpe:2.3:a:place:placeos_authentication:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
12.06%
Probability of exploitation in next 30 days
EPSS Percentile
95.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2021-41826 · Sep 30, 2021
This CVE's current EPSS score of 0.1206 is in the 98th percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 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

packetstormsecurity.com / files/164345/PlaceOS-1.2109.1-Open-Redirection.html
ExploitThird Party AdvisoryVDB Entry
github.com / PlaceOS/auth/issues/36
ExploitPatchThird Party Advisory