CVE-2021-4026
CVE-2021-4026 — Improper Access Control in bookstackapp/bookstack
bookstack is vulnerable to Improper Access Control
Published Updated Sources: cvelistV5, @huntrdev
Triage
Is it exploited, how likely is exploitation, what does it touch, and how severe do the scoring sources call it.
Exploitation
Unreported
no source claims exploitation
EPSS
1%
chance of exploitation in 30 days
CVSS base
6.5
MEDIUM
Affected scope
The catalog records vendors and products as separate lists, not pairs, so which product belongs to which vendor is not something this page can say.
Vendors (1)
Products (1)
Every base score collected
Sources score independently and disagree; each row says who scored it and under which version.
| Score | Version | Severity | Expl. | Impact | Source |
|---|---|---|---|---|---|
| 6.5 | CVSS 3.0 | MEDIUM | — | — | cvelistV5 |
Weakness & attack patterns
- CWE-284
Attack patterns reported against this CVE. The ATT&CK techniques below are inferred from its weakness class.
- T1027.009Obfuscated Files or Information: Embedded Payloads
- T1546.004Event Triggered Execution: .bash_profile and .bashrc
- T1546.016Event Triggered Execution: Installer Packages
References
2 on the record
- huntr.dev/bounties/c6dfa80d-43e6-4b49-95af-cc031bb66b1d
x_refsource_CONFIRM
- github.com/bookstackapp/bookstack/commit/b4fa82e3298a15443ca40bff205b7a16a1031d92
x_refsource_MISC
Elsewhere on this site
- bookstackappevery CVE for this vendor
- CWE-284other pages naming this weakness
Not in any source we poll
Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.
- No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
- No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
- No exploit packet captures, log samples, or incident case IDs supplied.