Security Vulnerabilities - CVEs Published In April 2026
OS Command Injection Remote Code Execution Vulnerability in API in Progress ADC Products allows an authenticated attacker with “VS Administration” permissions to execute arbitrary commands on the LoadMaster appliance by exploiting unsanitized input in the 'aclcontrol' command
CVSS Score
8.4
EPSS Score
0.021
Published
2026-04-20
A possible security vulnerability has been identified in Apache Kafka.
By default, the broker property `sasl.oauthbearer.jwt.validator.class` is set to `org.apache.kafka.common.security.oauthbearer.DefaultJwtValidator`. It accepts any JWT token without validating its signature, issuer, or audience. An attacker can generate a JWT token from any issuer with the `preferred_username` set to any user, and the broker will accept it.
We advise the Kafka users using kafka v4.1.0 or v4.1.1 to set the config `sasl.oauthbearer.jwt.validator.class` to `org.apache.kafka.common.security.oauthbearer.BrokerJwtValidator` explicitly to avoid this vulnerability. Since Kafka v4.1.2 and v4.2.0 and later, the issue is fixed and will correctly validate the JWT token.
CVSS Score
9.1
EPSS Score
0.006
Published
2026-04-20
Apache Doris MCP Server versions earlier than 0.6.1 are affected by an improper neutralization flaw in query context handling that may allow execution of unintended SQL statements and bypass of intended query validation and access restrictions through the MCP query execution interface. Version 0.6.1 and later are not affected.
CVSS Score
5.3
EPSS Score
0.007
Published
2026-04-20
Double-Free / Use-After-Free (UAF) in the `IntoIter::drop` and `ThinVec::clear` functions in the thin_vec crate. A panic in `ptr::drop_in_place` skips setting the length to zero.
CVSS Score
5.1
EPSS Score
0.002
Published
2026-04-20
Fudo Enterprise in versions from 5.5.0 through 5.6.2 allows low privileged users to access certain administrator-only resources via improperly protected API endpoints. This includes sensitive information such as system logs and parts of system configuration settings.
This vulnerability has been fixed in version 5.6.3
CVSS Score
5.1
EPSS Score
0.003
Published
2026-04-20
In the Linux kernel, the following vulnerability has been resolved:
net: skb: fix cross-cache free of KFENCE-allocated skb head
SKB_SMALL_HEAD_CACHE_SIZE is intentionally set to a non-power-of-2
value (e.g. 704 on x86_64) to avoid collisions with generic kmalloc
bucket sizes. This ensures that skb_kfree_head() can reliably use
skb_end_offset to distinguish skb heads allocated from
skb_small_head_cache vs. generic kmalloc caches.
However, when KFENCE is enabled, kfence_ksize() returns the exact
requested allocation size instead of the slab bucket size. If a caller
(e.g. bpf_test_init) allocates skb head data via kzalloc() and the
requested size happens to equal SKB_SMALL_HEAD_CACHE_SIZE, then
slab_build_skb() -> ksize() returns that exact value. After subtracting
skb_shared_info overhead, skb_end_offset ends up matching
SKB_SMALL_HEAD_HEADROOM, causing skb_kfree_head() to incorrectly free
the object to skb_small_head_cache instead of back to the original
kmalloc cache, resulting in a slab cross-cache free:
kmem_cache_free(skbuff_small_head): Wrong slab cache. Expected
skbuff_small_head but got kmalloc-1k
Fix this by always calling kfree(head) in skb_kfree_head(). This keeps
the free path generic and avoids allocator-specific misclassification
for KFENCE objects.
CVSS Score
5.5
EPSS Score
0.003
Published
2026-04-20
In the Linux kernel, the following vulnerability has been resolved:
X.509: Fix out-of-bounds access when parsing extensions
Leo reports an out-of-bounds access when parsing a certificate with
empty Basic Constraints or Key Usage extension because the first byte of
the extension is read before checking its length. Fix it.
The bug can be triggered by an unprivileged user by submitting a
specially crafted certificate to the kernel through the keyrings(7) API.
Leo has demonstrated this with a proof-of-concept program responsibly
disclosed off-list.
CVSS Score
7.1
EPSS Score
0.001
Published
2026-04-20
ThreatSonar Anti-Ransomware developed by TeamT5 has an Privilege Escalation vulnerability. Authenticated remote attackers with shell access can inject OS commands and execute them with root privileges.
CVSS Score
8.7
EPSS Score
0.004
Published
2026-04-20
SKYSEA Client View and SKYMEC IT Manager provided by Sky Co.,LTD. configure the installation folder with improper file access permission settings. A non-administrative user may manipulate and/or place arbitrary files within the installation folder of the product. As a result, arbitrary code may be executed with the administrative privilege.
CVSS Score
8.5
EPSS Score
0.001
Published
2026-04-20
ThreatSonar Anti-Ransomware developed by TeamT5 has an Arbitrary File Deletion vulnerability. Authenticated remote attackers with web access can exploit Path Traversal to delete arbitrary files on the system.
CVSS Score
7.2
EPSS Score
0.004
Published
2026-04-20