CVE-2026-33609

MEDIUM
Published Apr 22, 2026 Modified Apr 24, 2026 CWE-90

Description

Incomplete escaping of LDAP queries when running with 8bit-dns enabled allows users to perform queries of internal domain subtrees.

CVSS v3.1 Score

5.3
MEDIUM
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploit Prediction

0.0001
Probability of exploitation
0.00%
Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-90 CWE-90

Affected Products

Vendor Product
powerdns authoritative
powerdns authoritative

References

Frequently Asked Questions

What is CVE-2026-33609? +
Incomplete escaping of LDAP queries when running with 8bit-dns enabled allows users to perform queries of internal domain subtrees. It has a CVSS v3.1 base score of 5.3 (MEDIUM).
How severe is CVE-2026-33609? +
CVE-2026-33609 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0001, placing it in the 0th percentile for exploitation probability.
What products are affected by CVE-2026-33609? +
CVE-2026-33609 affects products from powerdns, specifically: authoritative. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2026-33609? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2024-54852 9.8

When LDAP connection is activated in Teedy versions between 1.9 to 1.12, the username field of the login form is …
CVE-2024-33868 9.8

An issue was discovered in linqi before 1.4.0.1 on Windows. There is LDAP injection.
CVE-2026-44930 9.8

An LDAP injection vulnerability in the LDAP Certificate repository of the XKMS server in Apache CXF may allow an attacker …
CVE-2026-41919 9.1

Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection') vulnerability in Apache OFBiz. This issue affects Apache …
CVE-2026-40459 8.8

PAC4J is vulnerable to LDAP Injection in multiple methods. A low-privileged remote attacker can inject crafted LDAP syntax into ID-based …
CVE-2025-48208 8.8

Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection') vulnerability in Apache HertzBeat . The attacker needs …

Don't wait for an exploit

Scan your website for vulnerabilities like CVE-2026-33609 — free, no signup required.

Start Free Scan