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CVE-2022-0877

21
FAUCET Score

CVE-2022-0877 is a stored Cross-site Scripting (XSS) vulnerability affecting BookStack versions prior to v22.02.3. This medium-severity flaw (CVSS 5.4) allows an authenticated attacker to inject malicious scripts, potentially leading to limited impact on confidentiality and integrity, requiring user interaction to trigger. While no public exploit code or active exploitation has been observed, and community discussion is minimal, organizations using affected BookStack versions should prioritize patching to mitigate this risk.

Impacted Technologies

VendorProductVersion(s)CPE
< 22.02.3CPE matchmatch criteria
cpe:2.3:a:bookstackapp:bookstack:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.6HIGH

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
HIGH
Exploitability Score
2.1
Impact Score
5.5
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.78%
Probability of exploitation in next 30 days
EPSS Percentile
52.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0078 is in the 87th percentile among its peer group of 15,239 CVEs.

Social Chatter

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

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: ssddanbrown/bookstackFixed in: 22.02.3
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-5rcc-6cmj-7728medium

Cross-site Scripting in BookStack

Mar 9, 2022

References

github.com / bookstackapp/bookstack/commit/856fca8289b7370cafa033ea21c408e7d4303fd6
PatchThird Party Advisory
huntr.dev / bounties/b04df4e3-ae5a-4dc6-81ec-496248b15f3c
ExploitIssue TrackingPatchThird Party Advisory