Security Vulnerabilities - CVEs Published In April 2026
If you use the zoneToCache function with a malicious authoritative server, an attacker can send a zone that result in a null pointer dereference, caused by a missing consistency check and leading to a denial of service.
CVSS Score
4.4
EPSS Score
0.005
Published
2026-04-22
A flaw was found in Red Hat Quay. When Red Hat Quay requests password re-verification for sensitive operations, such as token generation or robot account creation, the re-authentication prompt can be bypassed. This allows a user with a timed-out session, or an attacker with access to an idle authenticated browser session, to perform privileged actions without providing valid credentials. The vulnerability enables unauthorized execution of sensitive operations despite the user interface displaying an error for invalid credentials.
CVSS Score
5.4
EPSS Score
0.003
Published
2026-04-22
An attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service. The internal web server is disabled by default.
CVSS Score
5.3
EPSS Score
0.006
Published
2026-04-22
An attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service. The internal web server is disabled by default.
CVSS Score
5.3
EPSS Score
0.005
Published
2026-04-22
By publishing and querying a crafted zone an attacker can cause allocation of large entries in the negative and aggressive NSEC(3) caches.
CVSS Score
5.3
EPSS Score
0.006
Published
2026-04-22
Having many concurrent transfers of the same RPZ can lead to inconsistent RPZ data, use after free and/or a crash of the recursor. Normally concurrent transfers of the same RPZ zone can only occur with a malfunctioning RPZ provider.
CVSS Score
5.0
EPSS Score
0.002
Published
2026-04-22
An attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service. The internal web server is disabled by default.
CVSS Score
5.3
EPSS Score
0.005
Published
2026-04-22
A zone transition from NSEC to NSEC3 might trigger an internal inconsistency and cause a denial of service.
CVSS Score
5.9
EPSS Score
0.002
Published
2026-04-22
An attacker can send replies that result in a null pointer dereference, caused by a missing consistency check and leading to a denial of service. Cookies are disabled by default.
CVSS Score
5.9
EPSS Score
0.004
Published
2026-04-22
A flaw was found in the `readelf` utility of the binutils package. A local attacker could exploit two Denial of Service (DoS) vulnerabilities by providing a specially crafted Executable and Linkable Format (ELF) file. One vulnerability, a resource exhaustion (CWE-400), can lead to an out-of-memory condition. The other, a null pointer dereference (CWE-476), can cause a segmentation fault. Both issues can result in the `readelf` utility becoming unresponsive or crashing, leading to a denial of service.
CVSS Score
5.5
EPSS Score
0.001
Published
2026-04-22