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Fencer Intel
high 7.6

CVE-2022-0877 json

Cross-site Scripting (XSS) - Stored in bookstackapp/bookstack

published 4y ago modified 4mo ago also GHSA-5rcc-6cmj-7728 , EUVD-2022-1328

cvss
7.6
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

Cross-site Scripting (XSS) - Stored in GitHub repository bookstackapp/bookstack prior to v22.02.3.

Patch / fix

  • packagist ssddanbrown/bookstack 22.02.3
  • bookstackapp bookstackapp/bookstack v22.02.3

Is CVE-2022-0877 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

0.78% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • huntr.dev https://huntr.dev/bounties/b04df4e3-ae5a-4dc6-81ec-496248b15f3c referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 7.6 CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:H
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N
GitHub 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
packagist ssddanbrown/bookstack
<22.02.3
22.02.3

Affected products

  • bookstackapp bookstackapp/bookstack

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.