CVE-2019-19902: backdropcms backdrop_cms Improper Input Validation
Vulnerability summary
CVE-2019-19902 is a high (CVSS 7.2) Improper Input Validation vulnerability in backdropcms backdrop_cms. EPSS estimates a 1.50% chance of exploitation in the next 30 days, higher than 74.2% of scored vulnerabilities.
Not severe (CVSS 7.2, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Timeline
- 19-12-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in Backdrop CMS 1.13.x before 1.13.5 and 1.14.x before 1.14.2. It allows the upload of entire-site configuration archives through the user interface or command line. It does not sufficiently check uploaded archives for invalid data, allowing non-configuration scripts to potentially be uploaded to the server. This issue is mitigated by the fact that the attacker would be required to have the "Synchronize, import, and export configuration" permission, a permission that only trusted administrators should be given. Other measures in the product prevent the execution of PHP scripts, so another server-side scripting language must be accessible on the server to execute code.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
1.50%
Chance of exploitation in the next 30 days
Percentile
74%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.50% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Backdropcms1 product
- backdrop_cms≥ 1.13.0, < 1.13.5 | ≥ 1.14.0, < 1.14.2
1 vendor · 1 product