# Path traversal in rebar3 via unvalidated dependency app names

CVE record · `CVE-2026-103060`

- **Identifiers:** `CVE-2026-103060`
- **State:** Confirmed
- **Severity:** CVSS 7.5 High
- **Critical:** No
- **CNA:** EEF
- **Weakness (CWE):** [CWE-22](https://cwe.mitre.org/data/definitions/22.html)
- **Tags:** [Path traversal](https://agentprime.io/advisories/tag/path-traversal.md)
- **Technologies:** [erlang rebar3](https://agentprime.io/advisories/technology/erlang-rebar3.md)
- **Published:** 12 Oct 2026
- **Updated:** 16 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: EEF) at 12 Oct 2026, 15:43 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: erlang. Product: rebar3.
  - affected: `3.7.0-rc1 to before 3.27.2` (semver)
  - Other versions: unaffected
  - Package name: `rebar3`
  - purl: `pkg:otp/rebar3?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Frebar3&vcs_url=git%2Bhttps:%2F%2Fgithub.com%2Ferlang%2Frebar3.git`
- Vendor: erlang. Product: rebar3.
  - affected: `56b7d88975aa8da6446857cfd92de0825024bf63 to before e35282b26e499b1d9e8f30bba9dccd71cd8b02ba` (git)
  - Other versions: unaffected
  - Package name: `erlang/rebar3`
  - Collection: `https://github.com`
  - purl: `pkg:github/erlang/rebar3`

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 7.5 High, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`, from CNA (EEF)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0045, the 39th percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 12 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-103060](https://www.cve.org/CVERecord?id=CVE-2026-103060)
- [NVD: CVE-2026-103060](https://nvd.nist.gov/vuln/detail/CVE-2026-103060)

### References from the CNA

- <https://github.com/erlang/rebar3/security/advisories/GHSA-6ggr-r7mh-2mv8> (related, vendor-advisory)
- <https://cna.erlef.org/cves/CVE-2026-103060.html> (related)
- <https://osv.dev/vulnerability/EEF-CVE-2026-103060> (related)
- <https://github.com/erlang/rebar3/commit/56b7d88975aa8da6446857cfd92de0825024bf63> (related)
- <https://github.com/erlang/rebar3/commit/e35282b26e499b1d9e8f30bba9dccd71cd8b02ba> (patch)

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-103060>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-103060/>. Everything for agents: <https://agentprime.io/llms.txt>.