{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-9538 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-9538 is a high-severity denial of service vulnerability in BINGOS Archive::Tar, published on 26 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-9538 and fix it if it is affected.\n\nWhat it is: CVE-2026-9538 is a high-severity denial of service vulnerability in BINGOS Archive::Tar, published on 26 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-9538 in the wild and no public exploit code.\n\nAffected product: BINGOS Archive::Tar. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-9538/ (Markdown: https://insights.sbomify.com/CVE-2026-9538/index.md)","id":"CVE-2026-9538","markdown":"https://insights.sbomify.com/CVE-2026-9538/index.md","name":"CVE-2026-9538","record":{"aliases":["ALSA-2026:48225","ALSA-2026:49523","ALSA-2026:49524","ALSA-2026:49525","BELL-CVE-2026-9538","CLSA-2026-1786095908","CLSA-2026-1786097595","DEBIAN-CVE-2026-9538","ECHO-e379-3651-bf29","GHSA-rrh7-4pj2-xxq8","RHSA-2026:48225","RHSA-2026:49523","RHSA-2026:49524","RHSA-2026:49525","RLSA-2026:48225","RLSA-2026:49523","RLSA-2026:49524","RLSA-2026:49525","ROOT-OS-DEBIAN-11-CVE-2026-9538","ROOT-OS-DEBIAN-12-CVE-2026-9538","ROOT-OS-DEBIAN-13-CVE-2026-9538","UBUNTU-CVE-2026-9538"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Perl Archive::Tar library","requires_auth":"none","summary":"Attackers can cause memory exhaustion and denial of service by crafting tar headers with excessively large size fields in the Perl Archive::Tar library.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CPANSec","cpe":[{"product":"\\","vendor":"archive\\"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-789","name":"Memory Allocation with Excessive Size Value"}],"description":"Archive::Tar versions before 3.10 for Perl allow memory exhaustion via attacker controlled entry size field in tar header.\n\n_read_tar() reads each entry's payload with $handle-\u003eread($$data, $block), where $block is derived from the entry's 12-byte size field in the tar header with no upper bound on that value.\n\nA crafted header declaring a multi-gigabyte size causes Perl to allocate a scalar of that size.","ecosystems":["AlmaLinux:10","AlmaLinux:8","AlmaLinux:9","Red Hat:enterprise_linux:10.2","Red Hat:enterprise_linux:8::appstream","Red Hat:enterprise_linux:8::baseos","Red Hat:enterprise_linux:9::appstream","Rocky Linux:10","Rocky Linux:8","Rocky Linux:9"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Denial of service in Archive::Tar","id":"CVE-2026-9538","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":884,"n_references":2,"next":{"headline":"libslirp TCP URG OOB Read Information Leak","id":"CVE-2026-9539"},"packages":[{"ecosystem":"AlmaLinux:10","fixed":["3.02-512.el10_2.2"],"introduced":["0"],"last_affected":[],"package":"perl-Archive-Tar","purl":"pkg:rpm/almalinux/perl-Archive-Tar","source":"ALSA-2026:49523"},{"ecosystem":"AlmaLinux:8","fixed":["4:5.32.1-474.module_el8.10.0+4162+0aac7c4c"],"introduced":["0"],"last_affected":[],"package":"perl","purl":"pkg:rpm/almalinux/perl","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["4:5.32.1-474.module_el8.10.0+4240+a58b978c"],"introduced":["0"],"last_affected":[],"package":"perl","purl":"pkg:rpm/almalinux/perl","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["1.1903-10.module_el8.6.0+2766+8bf0b7ce"],"introduced":["0"],"last_affected":[],"package":"perl-Algorithm-Diff","purl":"pkg:rpm/almalinux/perl-Algorithm-Diff","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["2.30-3.el8_10"],"introduced":["0"],"last_affected":[],"package":"perl-Archive-Tar","purl":"pkg:rpm/almalinux/perl-Archive-Tar","source":"ALSA-2026:49524"},{"ecosystem":"AlmaLinux:8","fixed":["2.38-5.module_el8.10.0+4240+a58b978c"],"introduced":["0"],"last_affected":[],"package":"perl-Archive-Tar","purl":"pkg:rpm/almalinux/perl-Archive-Tar","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["1.68-3.module_el8.6.0+2766+8bf0b7ce"],"introduced":["0"],"last_affected":[],"package":"perl-Archive-Zip","purl":"pkg:rpm/almalinux/perl-Archive-Zip","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["1.01-474.module_el8.10.0+4162+0aac7c4c"],"introduced":["0"],"last_affected":[],"package":"perl-Attribute-Handlers","purl":"pkg:rpm/almalinux/perl-Attribute-Handlers","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["5.74-474.module_el8.10.0+4162+0aac7c4c"],"introduced":["0"],"last_affected":[],"package":"perl-AutoLoader","purl":"pkg:rpm/almalinux/perl-AutoLoader","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["5.74-474.module_el8.10.0+4240+a58b978c"],"introduced":["0"],"last_affected":[],"package":"perl-AutoSplit","purl":"pkg:rpm/almalinux/perl-AutoSplit","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["1.80-474.module_el8.10.0+4162+0aac7c4c"],"introduced":["0"],"last_affected":[],"package":"perl-B","purl":"pkg:rpm/almalinux/perl-B","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["1.80-474.module_el8.10.0+4240+a58b978c"],"introduced":["0"],"last_affected":[],"package":"perl-B","purl":"pkg:rpm/almalinux/perl-B","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["1.23-474.module_el8.10.0+4162+0aac7c4c"],"introduced":["0"],"last_affected":[],"package":"perl-Benchmark","purl":"pkg:rpm/almalinux/perl-Benchmark","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["2.28-5.module_el8.6.0+2766+8bf0b7ce"],"introduced":["0"],"last_affected":[],"package":"perl-CPAN","purl":"pkg:rpm/almalinux/perl-CPAN","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["0.12-13.module_el8.6.0+2766+8bf0b7ce"],"introduced":["0"],"last_affected":[],"package":"perl-CPAN-DistnameInfo","purl":"pkg:rpm/almalinux/perl-CPAN-DistnameInfo","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["2.150010-397.module_el8.6.0+2766+8bf0b7ce"],"introduced":["0"],"last_affected":[],"package":"perl-CPAN-Meta","purl":"pkg:rpm/almalinux/perl-CPAN-Meta","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["2.140-397.module_el8.6.0+2766+8bf0b7ce"],"introduced":["0"],"last_affected":[],"package":"perl-CPAN-Meta-Requirements","purl":"pkg:rpm/almalinux/perl-CPAN-Meta-Requirements","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["0.018-1001.module_el8.6.0+2766+8bf0b7ce"],"introduced":["0"],"last_affected":[],"package":"perl-CPAN-Meta-YAML","purl":"pkg:rpm/almalinux/perl-CPAN-Meta-YAML","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["1.50-439.module_el8.6.0+2766+8bf0b7ce"],"introduced":["0"],"last_affected":[],"package":"perl-Carp","purl":"pkg:rpm/almalinux/perl-Carp","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["0.66-474.module_el8.10.0+4162+0aac7c4c"],"introduced":["0"],"last_affected":[],"package":"perl-Class-Struct","purl":"pkg:rpm/almalinux/perl-Class-Struct","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["2.28-2.module_el8.6.0+2766+8bf0b7ce"],"introduced":["0"],"last_affected":[],"package":"perl-Compress-Bzip2","purl":"pkg:rpm/almalinux/perl-Compress-Bzip2","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["2.28-2.module_el8.6.0+3181+91434291"],"introduced":["0"],"last_affected":[],"package":"perl-Compress-Bzip2","purl":"pkg:rpm/almalinux/perl-Compress-Bzip2","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["2.096-1.module_el8.6.0+2766+8bf0b7ce"],"introduced":["0"],"last_affected":[],"package":"perl-Compress-Raw-Bzip2","purl":"pkg:rpm/almalinux/perl-Compress-Raw-Bzip2","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["2.096-1.module_el8.6.0+3181+91434291"],"introduced":["0"],"last_affected":[],"package":"perl-Compress-Raw-Bzip2","purl":"pkg:rpm/almalinux/perl-Compress-Raw-Bzip2","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["2.096-1.module_el8.6.0+2766+8bf0b7ce"],"introduced":["0"],"last_affected":[],"package":"perl-Compress-Raw-Lzma","purl":"pkg:rpm/almalinux/perl-Compress-Raw-Lzma","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["2.096-1.module_el8.6.0+3181+91434291"],"introduced":["0"],"last_affected":[],"package":"perl-Compress-Raw-Lzma","purl":"pkg:rpm/almalinux/perl-Compress-Raw-Lzma","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["2.096-2.module_el8.10.0+3779+d5938d28"],"introduced":["0"],"last_affected":[],"package":"perl-Compress-Raw-Zlib","purl":"pkg:rpm/almalinux/perl-Compress-Raw-Zlib","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["0.03-474.module_el8.10.0+4240+a58b978c"],"introduced":["0"],"last_affected":[],"package":"perl-Config-Extensions","purl":"pkg:rpm/almalinux/perl-Config-Extensions","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["0.32-441.module_el8.6.0+2766+8bf0b7ce"],"introduced":["0"],"last_affected":[],"package":"perl-Config-Perl-V","purl":"pkg:rpm/almalinux/perl-Config-Perl-V","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["0.06-474.module_el8.10.0+4162+0aac7c4c"],"introduced":["0"],"last_affected":[],"package":"perl-DBM_Filter","purl":"pkg:rpm/almalinux/perl-DBM_Filter","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["1.855-1.module_el8.6.0+2766+8bf0b7ce"],"introduced":["0"],"last_affected":[],"package":"perl-DB_File","purl":"pkg:rpm/almalinux/perl-DB_File","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["1.855-1.module_el8.6.0+3181+91434291"],"introduced":["0"],"last_affected":[],"package":"perl-DB_File","purl":"pkg:rpm/almalinux/perl-DB_File","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["2.174-440.module_el8.6.0+2766+8bf0b7ce"],"introduced":["0"],"last_affected":[],"package":"perl-Data-Dumper","purl":"pkg:rpm/almalinux/perl-Data-Dumper","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["2.174-440.module_el8.6.0+3181+91434291"],"introduced":["0"],"last_affected":[],"package":"perl-Data-Dumper","purl":"pkg:rpm/almalinux/perl-Data-Dumper","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["0.110-7.module_el8.6.0+2766+8bf0b7ce"],"introduced":["0"],"last_affected":[],"package":"perl-Data-OptList","purl":"pkg:rpm/almalinux/perl-Data-OptList","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["0.200007-8.module_el8.6.0+2766+8bf0b7ce"],"introduced":["0"],"last_affected":[],"package":"perl-Data-Section","purl":"pkg:rpm/almalinux/perl-Data-Section","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["3.62-1.module_el8.6.0+2766+8bf0b7ce"],"introduced":["0"],"last_affected":[],"package":"perl-Devel-PPPort","purl":"pkg:rpm/almalinux/perl-Devel-PPPort","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["3.62-1.module_el8.6.0+3181+91434291"],"introduced":["0"],"last_affected":[],"package":"perl-Devel-PPPort","purl":"pkg:rpm/almalinux/perl-Devel-PPPort","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["1.28-474.module_el8.10.0+4162+0aac7c4c"],"introduced":["0"],"last_affected":[],"package":"perl-Devel-Peek","purl":"pkg:rpm/almalinux/perl-Devel-Peek","source":"ALSA-2026:48225"},{"ecosystem":"AlmaLinux:8","fixed":["1.28-474.module_el8.10.0+4240+a58b978c"],"introduced":["0"],"last_affected":[],"package":"perl-Devel-Peek","purl":"pkg:rpm/almalinux/perl-Devel-Peek","source":"ALSA-2026:48225"}],"prev":{"headline":"Mojo::JWT versions before 1.02 for Perl verify HMAC signatures with a non-constant-time string comparison","id":"CVE-2026-9537"},"products":["Archive::Tar"],"published":"2026-05-26","related":[{"cvss_score":9.1,"headline":"Path traversal in Archive::Tar","id":"CVE-2026-42496","kev_date_added":null,"published":"2026-05-26"},{"cvss_score":7.5,"headline":"Path traversal in Archive::Tar","id":"CVE-2026-42497","kev_date_added":null,"published":"2026-05-26"},{"cvss_score":6.8,"headline":"Path traversal in n/a","id":"CVE-2007-4829","kev_date_added":null,"published":"2007-11-02"}],"sources":[{"class":"attribution","licence":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-28","vendors":["BINGOS"]},"summary":"Attackers can cause memory exhaustion and denial of service by crafting tar headers with excessively large size fields in the Perl Archive::Tar library.","url":"https://insights.sbomify.com/CVE-2026-9538/"}