Security Bulletin: DNS Rebinding TOCTOU Bypass of SSRF Protection in Langflow OSS URL Component

Summary Langflow OSS contains DNS rebinding TOCTOU vulnerability bypassing SSRF protection. URL component validates URLs with validateurlforssrf but fetches via RecursiveUrlLoader performing independent DNS resolution, creating exploitable TOCTOU window. Maintainers fixed identical issue in...

CVE-2026-56258 Crawl4AI - Arbitrary File Write via output_path Symlink and TOCTOU

Crawl4AI before 0.8.8 contains an arbitrary file write vulnerability in the screenshot and PDF endpoints that allows unauthenticated attackers to write files outside the intended directory via symlink and time-of-check-time-of-use TOCTOU attacks on the outputpath parameter. Remote attackers can...

CVE-2026-56258

CVE-2026-56258 affects Crawl4AI prior to 0.8.8. An arbitrary file write exists in the screenshot and PDF endpoints via output_path, exploiting insufficient path validation and symlink following with TOCTOU. Unauthenticated remote attackers can write files outside the intended directory, potential...

CVE-2026-56258 Crawl4AI - Arbitrary File Write via output_path Symlink and TOCTOU

Crawl4AI before 0.8.8 contains an arbitrary file write vulnerability in the screenshot and PDF endpoints that allows unauthenticated attackers to write files outside the intended directory via symlink and time-of-check-time-of-use TOCTOU attacks on the outputpath parameter. Remote attackers can...

CVE-2026-56258 Crawl4AI - Arbitrary File Write via output_path Symlink and TOCTOU

Crawl4AI before 0.8.8 contains an arbitrary file write vulnerability in the screenshot and PDF endpoints that allows unauthenticated attackers to write files outside the intended directory via symlink and time-of-check-time-of-use TOCTOU attacks on the outputpath parameter. Remote attackers can...

Time-of-check Time-of-use (TOCTOU) Race Condition

Overview Affected versions of this package are vulnerable to Time-of-check Time-of-use TOCTOU Race Condition in the HTTP Agent. An attacker can cause a client to accept a response as valid before the client has sent its request by exploiting the timing of HTTP responses. Remediation Upgrade nodej...

Exploit for Time-of-check Time-of-use (TOCTOU) Race Condition in Apache Tomcat

No d...

Time-of-check Time-of-use (TOCTOU) Race Condition

Overview ChatterBot is a ChatterBot is a machine learning, conversational dialog engine Affected versions of this package are vulnerable to Time-of-check Time-of-use TOCTOU Race Condition via the extract function. An attacker can cause arbitrary files to be written to a directory of their choice ...

Time-of-check Time-of-use (TOCTOU) Race Condition

Overview CoreWCF.NetNamedPipe is a port of the service side of Windows Communication Foundation WCF to .NET Core. The goal of this project is to enable existing WCF services to move to .NET Core. Affected versions of this package are vulnerable to Time-of-check Time-of-use TOCTOU Race Condition v...

MGASA-2026-0221 Updated libcap packages fix security vulnerabilities

CVE-2026-4878. A flaw was found in libcap. A local unprivileged user can exploit a Time-of-check-to-time-of-use TOCTOU race condition in the capsetfile function. This allows an attacker with write access to a parent directory to redirect file capability updates to an attacker-controlled file. By...

Updated libcap packages fix security vulnerabilities

CVE-2026-4878. A flaw was found in libcap. A local unprivileged user can exploit a Time-of-check-to-time-of-use TOCTOU race condition in the capsetfile function. This allows an attacker with write access to a parent directory to redirect file capability updates to an attacker-controlled file. By...

CVE-2026-53612

Local Privilege Escalation via TOCTOU in mount8 hookowner.c chmod/chown...

Time-of-check Time-of-use (TOCTOU) Race Condition

Overview org.webjars.npm:undici is an An HTTP/1.1 client, written from scratch for Node.js Affected versions of this package are vulnerable to Time-of-check Time-of-use TOCTOU Race Condition in the HTTP/1.1 client when an attacker-controlled upstream server injects an unsolicited response onto an...

rsync security update

An update is available for rsync. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The rsync utility enables the users to copy and synchronize files locally or...

rsync: TOCTOU symlink race condition allowing local privilege escalation in daemon mode without chroot.

A flaw was found in rsync. An rsync daemon configured with "use chroot = no" is exposed to a time-of-check / time-of-use race on parent path components. A local attacker with write access to a module can replace a parent directory component with a symlink between the receiver's check and its open...

PT-2026-51505

Name of the Vulnerable Software and Affected Versions Crawl4AI versions prior to 0.8.8 Description An arbitrary file write issue exists in the screenshot and PDF endpoints. Unauthenticated remote attackers can write files outside the intended directory by exploiting insufficient path validation a...

ALSA-2026:26410 Important: rsync security update

The rsync utility enables the users to copy and synchronize files locally or across a network. Synchronization with rsync is fast because rsync only sends the differences in files over the network instead of sending whole files. The rsync utility is also used as a mirroring tool. Security Fixes:...

Important: rsync security update

The rsync utility enables the users to copy and synchronize files locally or across a network. Synchronization with rsync is fast because rsync only sends the differences in files over the network instead of sending whole files. The rsync utility is also used as a mirroring tool. Security Fixes:...

PT-2026-53068

Name of the Vulnerable Software and Affected Versions libblkid-devel versions prior to 2.42.2-1.1 Description A local privilege escalation exists in the mount8 command due to a Time-of-Check to Time-of-Use TOCTOU race condition. This flaw allows an attacker to redirect the target path during the...

ALSA-2026:26408 Important: rsync security update

The rsync utility enables the users to copy and synchronize files locally or across a network. Synchronization with rsync is fast because rsync only sends the differences in files over the network instead of sending whole files. The rsync utility is also used as a mirroring tool. Security Fixes:...