EUVD-2026-58181Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Network-accessible service processes an attacker-supplied file with no authentication; sole impact is process termination, so C:N/I:N/A:H with no scope change.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
4Blast Radius
ecosystem impact- 90 npm packages depend on tar (31 direct, 59 indirect)
Ecosystem-wide dependent count for version 7.5.21.
DescriptionCVE.org
node-tar is a tar archive manipulation library for Node.js. Prior to 7.5.21, node-tar's filesFilter in src/list.ts uses the recursive mapHas helper to walk an archive entry path upward with path.dirname() and no segment cap when tar.t(...) or tar.x(...) receives a non-empty member-selection list. A crafted GNU L or PAX x long-path header with thousands of slash-separated segments reaches this.filter(entry.path, entry) in Parser[CONSUMEHEADER] in src/parse.ts before Unpack[CHECKPATH] applies maxDepth, causing an uncatchable RangeError stack overflow that terminates asynchronous and streaming Node.js consumers. This issue is fixed in version 7.5.21.
Articles & Coverage 1
AnalysisAI
Stack-exhaustion denial-of-service in node-tar (npm package tar) versions up to and including 7.5.20 allows unauthenticated remote attackers to terminate any Node.js process that lists or extracts selected members from an attacker-controlled archive. The vulnerable mapHas recursion in filesFilter overflows the call stack before any depth guard can execute, and the resulting RangeError is uncatchable by standard try/catch on async and streaming consumers - the dominant server-side usage pattern. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the targeted service calls `tar.t()` or `tar.x()` with a non-empty member-selection array as the second argument (e.g., `tar.t({ file: 'archive.tar.gz', gzip: true }, ['some-member'])`); without this argument, `filesFilter` is never installed and `mapHas` is never called, making the code path unreachable. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.5 rating (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) is well-calibrated for this vulnerability: the network attack vector and absence of authentication or user-interaction requirements accurately reflect that any internet-exposed service accepting attacker-supplied tar archives with member selection is directly reachable. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker submits a crafted tar archive (~188 bytes gzipped, ~26 KB uncompressed) containing a single entry whose GNU Long Link header encodes a path of approximately 12,000 slash-separated segments to a service that calls `tar.t()` or `tar.x()` with a member-selection list. The `mapHas` function recurses once per path segment until the call stack is exhausted, producing an uncatchable `RangeError` that propagates as an `uncaughtException` and terminates the Node.js worker process. … |
| Remediation | Upgrade node-tar to version 7.5.21 or later via `npm install tar@7.5.21` or `npm update tar`; this is the vendor-released patch that introduces the MAX=100 recursion cap in `mapHas`. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Node.js applications and services using tar npm package versions 7.5.20 and earlier, prioritizing those processing untrusted or user-supplied archive inputs. …
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View allSame technique Denial Of Service
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