{“lastseen”:””,”description”:”melange allows users to build apk packages using declarative pipelines. Starting in version 0.32.0 and prior to version 0.43.4, `melange lint –persist-lint-results` (opt-in flag, also usable via `melange build –persist-lint-results`) constructs output file paths by joining `–out-dir` with the `arch` and `pkgname` values read from the `.PKGINFO` control file of the APK being linted. In affected versions these values were not validated for path separators or `..` sequences, so an attacker who can supply an APK to a melange-based lint\/build pipeline (e.g. CI that lints third-party APKs, or build-as-a-service) could cause melange to write `lint-\\u003cpkgname\\u003e-\\u003cpkgver\\u003e-r\\u003cepoch\\u003e.json` to an arbitrary `.json` path reachable by the melange process. The written file is a JSON lint report whose content is partially attacker-influenced. There is no direct code-execution path, but the write can clobber other JSON artifacts on the filesystem. The issue only affects deployments that explicitly pass `–persist-lint-results`; the flag is off by default. The issue is fixed in melange v0.43.4 by validating `arch` and `pkgname` for `..`, `\/`, and `filepath.Separator` before path construction in `pkg\/linter\/results.go` (commit 84f3b45). As a workaround, do not pass `–persist-lint-results` when linting or building APKs whose `.PKGINFO` contents are not fully trusted. Running melange as a low-privileged user and confining writes to an isolated directory also limits impact.”,”published”:”2026-04-24T00:00:36.253Z”,”modified”:”2026-04-24T00:00:36.253Z”,”type”:”cve”,”title”:”melange has Path Traversal via .PKGINFO in –persist-lint-results”,”source”:”GitHub_M”,”references”:”https:\/\/github.com\/chainguard-dev\/melange\/security\/advisories\/GHSA-q2pw-xx38-p64j\\nhttps:\/\/github.com\/chainguard-dev\/melange\/commit\/84f3b450ce6e472c4abb8dc4c26d0ce8ac1259ac”,”id”:”CVE-2026-29051″,”bulletinFamily”:””,”cwe”:[“CWE-22″],”cvelist”:null,”sourceData”:”chainguard-dev melange \\u003e= 0.32.0, \\u003c 0.43.4″,”sourceHref”:””,”cvss”:{“score”:4.4,”severity”:”MEDIUM”,”vector”:”CVSS:3.1\/AV:L\/AC:L\/PR:N\/UI:R\/S:U\/C:N\/I:L\/A:L”,”version”:”3.1″},”cvss2″:{},”cvss3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””,”cvssV3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””}},”href”:””,”category_name”:”CVE”,”post_link”:””,”product”:”melange”,”version”:”\\u003e= 0.32.0, \\u003c 0.43.4″,”vendor”:”chainguard-dev”,”ai_description”:””,”ai_severity”:””,”ai_vendor”:””,”ai_product”:””,”ai_version”:””,”ai_score”:0}<\/p>\n","protected":false},"excerpt":{"rendered":"
{“lastseen”:””,”description”:”melange allows users to build apk packages using declarative pipelines. Starting in version 0.32.0 and prior to version 0.43.4, `melange lint –persist-lint-results` (opt-in flag, also…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[6,8,126,12,21,13,7,11,5],"class_list":["post-49122","post","type-post","status-publish","format-standard","hentry","category-category_cve","tag-cve","tag-cvss","tag-cvss-44","tag-exploit","tag-medium","tag-news","tag-security","tag-tapic","tag-vulnerability"],"yoast_head":"\n