How a Webmail Log File Became a Root-Level Backdoor

THREAT ANALYSIS May 2026 · Forensic Case Study A forensic breakdown of how an attacker turned CyberPanel's SnappyMail logging into a persistent webshell that survived every WordPress cleanup attempt. A WordPress site owner reported redirect malware on their site. They found that clicking anywhere...

CVE-2026-9137

The CSP report endpoint in MISP intended to limit logged CSP reports to 1 KB but incorrectly allowed reports up to 1 MB before truncation. On deployments where the endpoint is reachable by untrusted clients, this could allow attackers to generate excessive log volume and contribute to resource...

CVE-2026-9137 CSP Report Endpoint Log Flooding in MISP via Incorrect Size Limit

The CSP report endpoint in MISP intended to limit logged CSP reports to 1 KB but incorrectly allowed reports up to 1 MB before truncation. On deployments where the endpoint is reachable by untrusted clients, this could allow attackers to generate excessive log volume and contribute to resource...

CVE-2026-9137

The CSP report endpoint in MISP intended to limit logged CSP reports to 1 KB but incorrectly allowed reports up to 1 MB before truncation. On deployments where the endpoint is reachable by untrusted clients, this could allow attackers to generate excessive log volume and contribute to resource...

EUVD-2026-31155

The CSP report endpoint intended to limit logged CSP reports to 1 KB but incorrectly allowed reports up to 1 MB before truncation. On deployments where the endpoint is reachable by untrusted clients, this could allow attackers to generate excessive log volume and contribute to resource exhaustion...

CVE-2026-9137 CSP Report Endpoint Log Flooding in MISP via Incorrect Size Limit

The CSP report endpoint in MISP intended to limit logged CSP reports to 1 KB but incorrectly allowed reports up to 1 MB before truncation. On deployments where the endpoint is reachable by untrusted clients, this could allow attackers to generate excessive log volume and contribute to resource...

CVE-2026-9137 CSP Report Endpoint Log Flooding in MISP via Incorrect Size Limit

The CSP report endpoint in MISP intended to limit logged CSP reports to 1 KB but incorrectly allowed reports up to 1 MB before truncation. On deployments where the endpoint is reachable by untrusted clients, this could allow attackers to generate excessive log volume and contribute to resource...

CVE-2026-9137

CVE-2026-9137 affects the CSP report endpoint in MISP. The endpoint intended to cap CSP report payloads at 1 KB was incorrectly allowing reports up to 1 MB before truncation, enabling potential log flooding and resource exhaustion on deployments where the endpoint is reachable by untrusted client...

Deserialization of Untrusted Data

Overview symfony/monolog-bridge is a Provides integration for Monolog with various Symfony components Affected versions of this package are vulnerable to Deserialization of Untrusted Data via deserialization of network input in Symfony\Bridge\Monolog\Command\ServerLogCommand. An attacker can...

Insertion of Sensitive Information into Log File

Overview setup-php is a Setup PHP for use with GitHub Actions Affected versions of this package are vulnerable to Insertion of Sensitive Information into Log File via the process that configures GitHub tokens for Composer in workflows where an exact affected Composer version is pinned. An attacke...

CVE-2026-3592

creationtimestamp| type| source ---|---|--- 2026-05-20 14:15:08+00:00| seen| https://bsky.app/profile/o2cloud.bsky.social/post/3mmc3q4ymxu2m 2026-05-20 14:33:38+00:00| seen| https://bsky.app/profile/infosec.skyfleet.blue/post/3mmc4ra55ad24 2026-05-20 15:01:14+00:00| seen|...

Astra Linux – Vulnerability in Tomcat9

Improper neutralization of escape, meta, or control sequence vulnerabilities in Apache Tomcat. Tomcat did not escape ANSI escape sequences in log messages. If Tomcat was running in a console on a Windows operating system, and the console supported ANSI escape sequences, it was possible for an...

Astra Linux – Vulnerability in Ansible

A flaw was discovered in several Ansible modules, where parameters containing credentials, such as “secrets,” were logged in plain text on managed nodes, and were also made visible on the controller node when run in verbose mode. These parameters were not protected by the “nolog” feature. An...

Astra Linux – Vulnerability in the 389-DS-base

A heap overflow flaw was discovered in 389-ds-base. This issue causes a denial of service when writing a value larger than 256 characters in logentryattr...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: dmaengine: idxd: Fixed a crash that occurred when the event log was disabled. If reporting errors to the event log is not supported by the hardware, and an error that causes a Function Level Reset FLR is detected, the driver...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerabilities have been resolved: tpm: efi: Use a local variable to calculate the final log size When tpmreadlogefi is called multiple times, which occurs when one loads and unloads a TPM2 driver multiple times, the global variable efitpmfinallogsize will...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: idpf: checked for errors when calling registernetdev in init. The current init logic ignores the error code from registernetdev. This could lead to a WARNON message when attempting to unregister the device, if such an attempt...

Astra Linux – Vulnerability in Ansible

A flaw was discovered in Ansible’s amazon.aws collection when using the towercallback parameter from the amazon.aws.ec2instance module. This flaw allows an attacker to exploit the issue, as the module handles the parameter insecurely, resulting in the password being leaked in the logs...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: xfs: Fixed undersized liclogroundoff values. If the superblock does not list a log stripe unit, we set the incore log roundoff value to 512. This can lead to corrupted logs and unmountable file systems in generic/617 on a disk...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: dm mirror log: The bitsetsize is rounded up to BITSPERLONG. The code in dm-log rounds up bitsetsize to 32 bits. Then, it uses findnextzerobitle on the allocated region. findnextzerobitle accesses the bitmap using unsigned long...