Vulnerability details
CVE-2017-20207
Dan Coulter Flickr Gallery
Flickr Gallery <= 1.5.2 - Unauthenticated PHP Object Injection
CVSS 3.1
9.8Critical
Official description
The Flickr Gallery plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 1.5.2 via deserialization of untrusted input from the `pager ` parameter. This allows unauthenticated attackers to inject a PHP Object. Attackers were actively exploiting this vulnerability with the WP_Theme() class to create backdoors.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.8Critical | 3.1 | CVEProject cvelistV5 (CNA) (Wordfence) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Dan Coulter | Flickr Gallery | v < 1.5.3 | CVEProject cvelistV5 (CNA) |
References and advisories
3
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Details
- Published
- 2025-10-18
- Last updated
- 2026-04-08
- State
- Published
- Assigner (CNA)
- Wordfence
Exploit prediction (EPSS)
0.73%
Probability of exploitation in 30 days
54.6%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-502Deserialization of Untrusted Data