GHSA-7Q4V-2MR6-5GPX Microsoft Security Advisory CVE-2026-45491 – .NET Tampering Vulnerability

Executive Summary Microsoft is releasing this security advisory to provide information about a vulnerability in System.Formats.Tar. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A tampering vulnerability exists in the...

EUVD-2026-36766

In OCaml-tar before 3.4.0, a crafted archive with ../ path segments in its name allows escaping the current working directory. This is not desired behavior, and tar1 rejects such extractions, but ocaml-tar decompresses it anyway. The impact is that it allows arbitrary file writes outside of the...

CVE-2026-45390

In OCaml-tar before 3.4.0, a crafted archive with ../ path segments in its name allows escaping the current working directory. This is not desired behavior, and tar1 rejects such extractions, but ocaml-tar decompresses it anyway. The impact is that it allows arbitrary file writes outside of the...

node-tar applies PAX size override to intermediary GNU long-name/long-link headers, causing tar parser interpretation differential (file smuggling)

Summary tar node-tar applies a PAX extended header's size= record and other PAX overrides to the next header entry of any type, including intermediary metadata headers such as a GNU long-name L or long-link K entry. Per POSIX pax, a PAX extended header x describes the next file entry, not the...

Interpretation Conflict

Overview tar is a full-featured Tar for Node.js. Affected versions of this package are vulnerable to Interpretation Conflict due to improper handling of PAX extended header size overrides in intermediary metadata headers. An attacker can cause inconsistent archive parsing results between differen...

NPM: node-tar applies PAX size override to intermediary GNU long-name/long-link headers, causing tar parser interpretation differential (file smuggling)

NPM: node-tar applies PAX size override to intermediary GNU long-name/long-link headers, causing tar parser interpretation differential file smuggling vulnerability discovered by ? in WordPress Npm tar versions = 7.5.15...

@0xwork/connect (>=0.1.0, <=0.1.9), @3onedata/alsatian (>=0.1.8-fix.3, <=0.1.8-fix.5) +891 more potentially affected by CVE-2026-53655 via tar (>=7.0.0, <=7.5.15)

tar NPM version =7.0.0, =0.1.0, =0.1.8-fix.3, =0.0.6, =11.0.19, =1.0.0, =1.0.2, =2026.4.23-zh, =0.1.0, =0.1.1, =0.1.1, =2026.4.4, =0.59.0, =0.64.0 - @aivibeclaw/speech-core 2026.6.10 and more Source cves: CVE-2026-53655 Source advisory: OSV:GHSA-VMF3-W455-68VH...

org.webjars.npm:canvas (>=2.5.0, <=2.6.0), org.webjars.npm:color-thief (2.2.5) +12 more potentially affected by CVE-2026-53655 via org.webjars.npm:tar (>=0.1.20, <=4.4.19)

org.webjars.npm:tar MAVEN version =0.1.20, =2.5.0, =0.97.5, =0.2.0, =3.4.0, =0.6.19, =2.0.0, =3.1.4, =3.4.1 - org.webjars.npm:tar.gz 1.0.7 Source cves: CVE-2026-53655 Source advisory: SNYK:JAVA-ORGWEBJARSNPM-17342363...

GHSA-VMF3-W455-68VH node-tar applies PAX size override to intermediary GNU long-name/long-link headers, causing tar parser interpretation differential (file smuggling)

Summary tar node-tar applies a PAX extended header's size= record and other PAX overrides to the next header entry of any type, including intermediary metadata headers such as a GNU long-name L or long-link K entry. Per POSIX pax, a PAX extended header x describes the next file entry, not the...

Interpretation Conflict

Overview org.webjars.npm:tar is a full-featured Tar for Node.js. Affected versions of this package are vulnerable to Interpretation Conflict due to improper handling of PAX extended header size overrides in intermediary metadata headers. An attacker can cause inconsistent archive parsing results...

@0xwork/connect (>=0.1.0, <=0.1.9), @3onedata/alsatian (>=0.1.8-fix.3, <=0.1.8-fix.5) +891 more potentially affected by CVE-2026-53655 via tar (>=7.0.0, <=7.5.15)

tar NPM version =7.0.0, =0.1.0, =0.1.8-fix.3, =0.0.6, =11.0.19, =1.0.0, =1.0.2, =2026.4.23-zh, =0.1.0, =0.1.1, =0.1.1, =2026.4.4, =0.59.0, =0.64.0 - @aivibeclaw/speech-core 2026.6.10 and more Source cves: CVE-2026-53655 Source advisory: SNYK:JS-TAR-17342362...

CVE-2026-9863

Fortra BoKS Manager contains an OS command injection vulnerability in the client upgrade and patch tooling for legacy tar-based client installations. A malicious or compromised legacy tar-installed client selected for upgrade or patching may be able to cause commands to be executed on the BoKS...

CVE-2026-9863 Core Privileged Access Manager (BoKS) upgrade tooling command injection vulnerability

Fortra BoKS Manager contains an OS command injection vulnerability in the client upgrade and patch tooling for legacy tar-based client installations. A malicious or compromised legacy tar-installed client selected for upgrade or patching may be able to cause commands to be executed on the BoKS...

EUVD-2026-36731

Fortra BoKS Manager contains an OS command injection vulnerability in the client upgrade and patch tooling for legacy tar-based client installations. A malicious or compromised legacy tar-installed client selected for upgrade or patching may be able to cause commands to be executed on the BoKS...

CVE-2026-9863

CVE-2026-9863 concerns Fortra BoKS Manager, where an OS command injection vulnerability exists in the client upgrade/patch tooling for legacy tar-based installations. A malicious or compromised legacy tar-installed client selected for upgrade or patching may cause commands to be executed on the B...

CVE-2026-9863 Core Privileged Access Manager (BoKS) upgrade tooling command injection vulnerability

Fortra BoKS Manager contains an OS command injection vulnerability in the client upgrade and patch tooling for legacy tar-based client installations. A malicious or compromised legacy tar-installed client selected for upgrade or patching may be able to cause commands to be executed on the BoKS...

PT-2026-49577

Name of the Vulnerable Software and Affected Versions node-tar versions prior to 7.5.16 Description An interpretation differential exists in how the software parses tar archives. The issue occurs because the library applies a PAX extended header's size= record and other PAX overrides to the next...

CVE-2026-45390

In OCaml-tar before 3.4.0, a crafted archive with ../ path segments in its name allows escaping the current working directory. This is not desired behavior, and tar1 rejects such extractions, but ocaml-tar decompresses it anyway. The impact is that it allows arbitrary file writes outside of the...

PT-2026-49246

Name of the Vulnerable Software and Affected Versions Fortra BoKS Manager affected versions not specified Description An OS command injection issue exists in the client upgrade and patch tooling used for legacy tar-based client installations. A malicious or compromised legacy tar-installed client...

PT-2026-49604

Name of the Vulnerable Software and Affected Versions Buildah versions prior to 1.43.2 Buildah versions prior to 1.44 Podman versions prior to 5.8.3 Description When processing build contexts or add/copy instructions, a malicious server serving a Git repository or a tar archive file can cause fil...