CVE Explorer

CVE-2026-34978

OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g., rss:///../job.cache), letting a remote IPP client write RSS XML bytes outside CacheDir/rss (anywhere that is lp-writable). In particular, because CacheDir is group-writable by default (typically root:lp and mode 0770), the notifier (running as lp) can replace root-managed state files via temp-fi

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ae74a260dfd0c7c13371f3d5df21fdb8cd5651846afedd938206d641bdfdea60

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"cups","vendor":"OpenPrinting","versions":[{"status":"affected","version":"<= 2.4.16"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:f9b5da686992aa2264dbca71d8014173432c65cc22db589e34798a32de8980e6 · sha256:06404c2ab507cd70… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:f9b5da686992aa2264dbca71d8014173432c65cc22db589e34798a32de8980e6 · sha256:06404c2ab507cd70… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:f9b5da686992aa2264dbca71d8014173432c65cc22db589e34798a32de8980e6 · sha256:06404c2ab507cd70… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"tags":["exploit"],"url":"https://github.com/OpenPrinting/cups/security/advisories/GHSA-f53q-7mxp-9gcr"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f9b5da686992aa2264dbca71d8014173432c65cc22db589e34798a32de8980e6 · sha256:06404c2ab507cd70… · /containers/adp/0/references/0

{"name":"https://github.com/OpenPrinting/cups/security/advisories/GHSA-f53q-7mxp-9gcr","tags":["x_refsource_CONFIRM"],"url":"https://github.com/OpenPrinting/cups/security/advisories/GHSA-f53q-7mxp-9gcr"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f9b5da686992aa2264dbca71d8014173432c65cc22db589e34798a32de8980e6 · sha256:06404c2ab507cd70… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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