VulnSocial

CVE-2026-31802Disclosure(isaacs / tar)

LOWCVSS 5.5 · MEDIUM

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

  • Prioritize remediation for isaacs tar systems immediately
  • Hunt for exploitation attempts and persistence artifacts
  • Increase monitoring for publicly documented tradecraft
  • Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

NVD description

node-tar is a full-featured Tar for Node.js. Prior to version 7.5.11, tar (npm) can be tricked into creating a symlink that points outside the extraction directory by using a drive-relative symlink target such as C:../../../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This vulnerability is fixed in 7.5.11.

isaacs CVEsBack to dashboard
3.5/ 10 priority

Sources & remediation

Exploit / PoC references
Vendor / third-party advisories
Weakness type (CWE)
CWE-22

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • tar

Threat summary

  • Public PoC and exploit tooling are both present
  • 4 mentions across 4 observed days
  • Momentum state: stable

What's happening

  • Exploit tool or code specified in 1 signal
  • PoC mentioned or linked in 2 signals
  • Technical details provided in 1 signal
  • Disclosure: 3 classified signals
  • Peaked 3d ago at 1 mentions (2026-03-09); latest day: 1
  • 4 total mentions across 4 days

Affected systems

Vendors
isaacs
Products
tar

Deep dive

Activity timeline4 mentions / 4d
00111Mentions · 2026-03-09: 1Mentions · 2026-03-11: 1Mentions · 2026-04-05: 1Mentions · 2026-09-11: 1PoC Mentioned / Linked · 2026-04-05: 1PoC Mentioned / Linked · 2026-09-11: 1Exploit Tool / Code · 2026-09-11: 1Technical Details · 2026-03-09: 103-0903-1104-0509-11
Signal classification2 categories
Disclosure
375.0%
Exploit
125.0%
Referenced assets5 URLs
Classification over time
DateTotalLabels
2026-03-091
Disclosure1
2026-03-111
Disclosure1
2026-04-051
Disclosure1
2026-09-111
Exploit1
Full discourse4 posts
  • Lambda Watchdog@LambdaWatchdog
    Disclosure

    🚨 New HIGH CVE detected in AWS Lambda 🚨 CVE-2026-31802 impacts tar in 4 Lambda base images. Details: https://github.com/aws/aws-lambda-base-images/issues/447 More: https://lambdawatchdog.com/ #AWS #Lambda #CVE #CloudSecurity #Serverless

    Post summary

    A new HIGH severity CVE-2026-31802, impacting tar in four AWS Lambda base images, has been announced with links to further details.

    0001037
    31 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-31802 node-tar is a full-featured Tar for Node.js. Prior to version 7.5.11, tar (npm) can be tricked into creating a symlink that points outside the extraction directory by… https://www.cve.org/CVERecord?id=CVE-2026-31802

    Post summary

    CVE-2026-31802 compromises node-tar versions before 7.5.11 by allowing attackers to craft a tar that creates symlinks pointing outside the extraction directory, facilitating potential directory traversal attacks.

    0000173
    56.6K followersView on X
  • cybrmonk@cybr_monk
    Exploit

    CVE-2026-31802 Lets Attackers Overwrite Any File on Your System, Exploit Code Is Live on GitHub https://cybrmonk.com/blog/cve-2026-31802-lets-attackers-overwrite-any-file-on-your-system-exploit-code-is-live-on-github #cybersecurity #threatintelligence https://t.co/fwwMTtywlf

    Post summary

    The tweet announces CVE‑2026‑31802, stating that attackers can overwrite any file and that exploit code is publicly available on GitHub.

    0000042
    47 followersView on X
  • SadishYT@Sadishyt
    Disclosure

    CVE-2026-31802 node-tar is a full-featured Tar for Node.js. GitHub Link: https://github.com/Recorded-texteditor120/CVE-2026-31802 #infosec #Hacking #infosecurity #Malware #bugbountytips #CTF #BugBounty #vulnerability #pwn #CyberSecurityAwareness #CyberSecurity #cybersecuritytips https://t.co/P48NKoyyk5

    Post summary

    The tweet announces CVE‑2026‑31802, provides a GitHub link likely containing a PoC, but offers no details on exploitation, patching, or technical specifics.

    0000069
    12 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appisaacstar-node.js-

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