CVE-2023-6199 | Book Stack v23.10.2 - LFR via Blind SSRF

Exp

Book Stack version 23.10.2 allows filtering local files on the server. This is possible because the application is vulnerable to SSRF.

Published: 2023-11-20 Last update: 2025-05-19 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-6199 is rated High Exploit Risk (76.5/100): CVSS Medium severity, with high exploitation likelihood (EPSS 13.38%, 94th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +2.60% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2023-6199

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2023-6199

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-12-28 10.77% 13.38% +2.60%
2 2025-12-27 13.38% 10.77% -2.60%
3 2025-12-08 — 13.38% —

Full EPSS history (23 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-6199

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 3.6 [email protected]
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 3.6 [email protected]

Weakness enumeration for CVE-2023-6199

Affected software / configurations for CVE-2023-6199

Vendor Product Version Raw CPE
bookstackapp bookstack 23.10.2 cpe:2.3:a:bookstackapp:bookstack:23.10.2:*:*:*:*:*:*:*

References for CVE-2023-6199

URL Tags
https://fluidattacks.com/advisories/imagination/ Exploit Third Party Advisory
https://www.bookstackapp.com/blog/bookstack-release-v23-10-3/ Product Release Notes Vendor Advisory
cvelogic Threat Intelligence