# Serendipity vulnerabilities

Source: https://junglewise.ai/threats/vendors/serendipity  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/vendors/serendipity.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 7 vulnerabilities in Serendipity: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-67350, was published on 31 July 2026. 1 technology has a page of its own.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 7 (0 critical, 0 exploited in the wild)

## About Serendipity

Serendipity is the developer of an open-source PHP-based weblog engine.

## Latest Serendipity vulnerabilities

- [CVE-2026-67350: Serendipity open redirect in exit.php](https://junglewise.ai/threats/cve-2026-67350-serendipity-open-redirect-in-exit-php) (medium, CVSS 4.3, published 31 Jul 2026)
- [CVE-2026-67351: Serendipity privilege escalation via authentication context confusion](https://junglewise.ai/threats/cve-2026-67351-serendipity-privilege-escalation-via-authentication-context) (high, CVSS 8.8, published 30 Jul 2026)
- [CVE-2026-39963: Serendipity Host Header Injection in serendipity_setCookie](https://junglewise.ai/threats/cve-2026-39963-serendipity-host-header-injection-in-serendipity-setcookie) (medium, CVSS 6.9, published 15 Apr 2026)
- [CVE-2017-5609: Serendipity SQL injection in include/functions_entries.inc.php](https://junglewise.ai/threats/cve-2017-5609-serendipity-sql-injection-in-include-functions-entries-inc-php) (high, CVSS 8.8, published 28 Jan 2017)
- [CVE-2017-5476: Serendipity CSRF in plugin installation](https://junglewise.ai/threats/cve-2017-5476-serendipity-csrf-in-plugin-installation) (high, CVSS 8.8, published 14 Jan 2017)
- [CVE-2017-5475: Serendipity CSRF in comment.php comment deletion](https://junglewise.ai/threats/cve-2017-5475-serendipity-csrf-in-comment-php-comment-deletion) (high, CVSS 8.8, published 14 Jan 2017)
- [CVE-2017-5474: Serendipity open redirect in comment.php](https://junglewise.ai/threats/cve-2017-5474-serendipity-open-redirect-in-comment-php) (medium, CVSS 6.1, published 14 Jan 2017)

## Most severe Serendipity vulnerabilities

- [CVE-2026-67351: Serendipity privilege escalation via authentication context confusion](https://junglewise.ai/threats/cve-2026-67351-serendipity-privilege-escalation-via-authentication-context) (high, CVSS 8.8, published 30 Jul 2026)
- [CVE-2017-5609: Serendipity SQL injection in include/functions_entries.inc.php](https://junglewise.ai/threats/cve-2017-5609-serendipity-sql-injection-in-include-functions-entries-inc-php) (high, CVSS 8.8, published 28 Jan 2017)
- [CVE-2017-5476: Serendipity CSRF in plugin installation](https://junglewise.ai/threats/cve-2017-5476-serendipity-csrf-in-plugin-installation) (high, CVSS 8.8, published 14 Jan 2017)
- [CVE-2017-5475: Serendipity CSRF in comment.php comment deletion](https://junglewise.ai/threats/cve-2017-5475-serendipity-csrf-in-comment-php-comment-deletion) (high, CVSS 8.8, published 14 Jan 2017)
- [CVE-2026-39963: Serendipity Host Header Injection in serendipity_setCookie](https://junglewise.ai/threats/cve-2026-39963-serendipity-host-header-injection-in-serendipity-setcookie) (medium, CVSS 6.9, published 15 Apr 2026)
- [CVE-2017-5474: Serendipity open redirect in comment.php](https://junglewise.ai/threats/cve-2017-5474-serendipity-open-redirect-in-comment-php) (medium, CVSS 6.1, published 14 Jan 2017)
- [CVE-2026-67350: Serendipity open redirect in exit.php](https://junglewise.ai/threats/cve-2026-67350-serendipity-open-redirect-in-exit-php) (medium, CVSS 4.3, published 31 Jul 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Serendipity technologies

- [Serendipity](https://junglewise.ai/threats/technologies/serendipity): 8 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Serendipity vulnerabilities", https://junglewise.ai/threats/vendors/serendipity, 9 November 2026.