How severe is CVE-2017-5609?

CVE-2017-5609 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-5609 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-5609?

CVE-2017-5609 affects S9y Serendipity. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-5609?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-5609 published?

CVE-2017-5609 was published on 2017-01-28 and last updated on 2026-06-17.

CVE-2017-5609

CVE-2017-5609 is a high-severity vulnerability in S9y Serendipity with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-89.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: S9y Serendipity
Published: 2017-01-28
Last modified: 2026-06-17

Description

SQL injection vulnerability in include/functions_entries.inc.php in Serendipity 2.0.5 allows remote authenticated users to execute arbitrary SQL commands via the cat parameter.

Frequently asked questions

What is CVE-2017-5609?: SQL injection vulnerability in include/functions_entries.inc.php in Serendipity 2.0.5 allows remote authenticated users to execute arbitrary SQL commands via the cat parameter.
How severe is CVE-2017-5609?: CVE-2017-5609 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-5609 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-5609?: CVE-2017-5609 affects S9y Serendipity. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-5609?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-5609 published?: CVE-2017-5609 was published on 2017-01-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:s9y:serendipity:2.0.5:*:*:*:*:*:*:*

More vulnerabilities in S9y Serendipity

CVE-2005-1452 — Critical (CVSS 10.0): Serendipity before 0.8 allows Chief users to "hide plugins installed by other users."
CVE-2005-1449 — Critical (CVSS 10.0): Unknown vulnerability in serendipity_config_local.inc.php for Serendipity before 0.8 has unknown impact.
CVE-2020-10964 — Critical (CVSS 9.8): Serendipity before 2.3.4 on Windows allows remote attackers to execute arbitrary code because the filename of a renamed…
CVE-2011-1134 — Critical (CVSS 9.8): Cross-Site Scripting (XSS) in Xinha, as included in the Serendipity package before 1.5.5, allows remote attackers to…
CVE-2016-10752 — Critical (CVSS 9.8): serendipity_moveMediaDirectory in Serendipity 2.0.3 allows remote attackers to upload and execute arbitrary PHP code…
CVE-2016-10082 — Critical (CVSS 9.8): include/functions_installer.inc.php in Serendipity through 2.0.5 is vulnerable to File Inclusion and a possible Code…

All CVEs affecting S9y Serendipity →

Other CWE-89 (SQL Injection) vulnerabilities

CVE-2026-54350 — Critical (CVSS 10.0): Budibase is an open-source low-code platform. Prior to 3.39.12, an unauthenticated visitor of any published Budibase…
CVE-2026-8054 — Critical (CVSS 10.0): Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') in the Publish Audit API endpoints…
CVE-2026-42287 — Critical (CVSS 10.0): Emlog is an open source website building system. Prior to version 2.6.11, direct SQL injection in article creation and…
CVE-2026-3325 — Critical (CVSS 10.0): SQL injection (SQLi) in MegaCMS v12.0.0, specifically in the “id_territorio” parameter of the…
CVE-2025-10878 — Critical (CVSS 10.0): A SQL injection vulnerability exists in the login functionality of Fikir Odalari AdminPando 1.0.1 before 2026-01-26.…
CVE-2025-57792 — Critical (CVSS 10.0): Explorance Blue versions prior to 8.14.9 contain a SQL injection vulnerability caused by insufficient validation of…

Browse all CWE-89 (SQL Injection) vulnerabilities →