CVE-2020-28949Archive_Tar through 1.4.10 has :// filename sanitization only to address phar attacks, and thus any other stream-wrapper attack (such as file:// to overwrite files) can still succeed.
Updated under an hour ago ()
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It affects php archive_tar and 3 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Aug 25, 2022; federal agencies had to remediate by Sep 15, 2022. Treat that date as your deadline.
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Free account, 1 product
Archive_Tar through 1.4.10 has :// filename sanitization only to address phar attacks, and thus any other stream-wrapper attack (such as file:// to overwrite files) can still succeed.
- CVSS
- 7.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Added to CISA KEV Aug 25, 2022; federal remediation due Sep 15, 2022Apply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 84.55% (percentile 100)
- Assigned by
- mitre
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
php archive_tar php:archive_tar | before 1.4.12 | NVD |
debian debian_linux debian:debian_linux | 9.0; 10.0 | NVD |
fedoraproject fedora fedoraproject:fedora | 32; 33; 34; 35 | NVD |
drupal drupal drupal:drupal | from 7.0 before 7.75; from 8.0.0 before 8.9.10; from 8.8.0 before 8.8.12; from 9.0.0 before 9.0.9 | NVD |
References
- https://github.com/pear/Archive_Tar/issues/33x-refsource-misc, exploit, issue-tracking, vendor-advisory
- https://www.drupal.org/sa-core-2020-013x-refsource-confirm, third-party-advisory
- https://lists.debian.org/debian-lts-announce/2020/11/msg00045.htmlmailing-list, x-refsource-mlist, third-party-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4V35LBRM6HBCXBVCITKQ4UEBTXO2EG7B/vendor-advisory, x-refsource-fedora, mailing-list, third-party-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NBYZSHYTIOBK6V7C4N7TP6KIKCRKLVWP/vendor-advisory, x-refsource-fedora, mailing-list, third-party-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KWM4CTMEGAC4I2CHYNJVSROY4CVXVEUT/vendor-advisory, x-refsource-fedora, mailing-list, third-party-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5KSFM672XW3X6BR7TVKRD63SLZGKK437/vendor-advisory, x-refsource-fedora, mailing-list, third-party-advisory
- https://www.debian.org/security/2020/dsa-4817vendor-advisory, x-refsource-debian, mailing-list, third-party-advisory
- http://packetstormsecurity.com/files/161095/PEAR-Archive_Tar-Arbitrary-File-Write.htmlx-refsource-misc, exploit, third-party-advisory, vdb-entry
- https://security.gentoo.org/glsa/202101-23vendor-advisory, x-refsource-gentoo, third-party-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VJQQYDAOWHD6RDITDRPHFW7WY6BS3V5N/vendor-advisory, x-refsource-fedora, mailing-list, third-party-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42GPGVVFTLJYAKRI75IVB5R45NYQGEUR/vendor-advisory, x-refsource-fedora, mailing-list, third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-28949us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.