CVE-2020-5256

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.96% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 80.2% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2020-03-09 15:50Z6 YR AGO

Last updated

2024-08-04 08:22Z2 YR AGO

Reserved

2020-01-02

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 7.9)

CNA CVSS vector

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

Weaknesses

• CWE-95Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')Variant
• CWE-434Unrestricted Upload of File with Dangerous TypeBase

Data version

5.1

Document digest

9eb4686a3fc421c9dd90b3c566883c60e2c87273c47555bd8e98a648a712fda9

• github.comhttps://github.com/BookStackApp/BookStack/security/advisories/GHSA-g9rq-x4fj-f5hxx_refsource_CONFIRM
• github.comhttps://github.com/BookStackApp/BookStack/releases/tag/v0.25.3x_refsource_MISC
• github.comhttps://github.com/BookStackApp/BookStack/releases/tag/v0.25.4x_refsource_MISC
• github.comhttps://github.com/BookStackApp/BookStack/releases/tag/v0.25.5x_refsource_MISC