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CVE-2021-29448

26
FAUCET Score

CVE-2021-29448 is a Stored Cross-Site Scripting (XSS) vulnerability affecting Pi-hole's Admin portal, specifically the ftldns, pi-hole, and web_interface components. This high-severity vulnerability (CVSS 8.8) allows an unauthenticated attacker with network access to the DNS server to inject malicious scripts, potentially leading to a compromise of confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
5.7CPE matchmatch criteria
cpe:2.3:a:pi-hole:ftldns:5.7:*:*:*:*:*:*:*
5.2.4CPE matchmatch criteria
cpe:2.3:a:pi-hole:pi-hole:5.2.4:*:*:*:*:*:*:*
< 5.5CPE matchmatch criteria
cpe:2.3:a:pi-hole:web_interface:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.6HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
4.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.67%
Probability of exploitation in next 30 days
EPSS Percentile
48.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0067 is in the 50th percentile among its peer group of 14,852 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 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 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / pi-hole/AdminLTE/security/advisories/GHSA-cwwf-93p7-73j9
ExploitThird Party Advisory