CVE Explorer

CVE-2026-33191

Free5GC is an open-source Linux Foundation project for 5th generation (5G) mobile core networks. Versions prior to 1.4.2 are vulnerable to null byte injection in URL path parameters. A remote attacker can inject null bytes (URL-encoded as %00) into the supi path parameter of the UDM's Nudm_SubscriberDataManagement API. This causes URL parsing failure in Go's net/url package with the error "invalid control character in URL", resulting in a 500 Internal Server Error. This null byte injection vulne

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e442b17d46a070d0c0ae0d4b4b2db1e72b661aadf56ff8f2ff6cc9258976562d

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-248","description":"CWE-248: Uncaught Exception","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:5680dc9c241ecb76ecbfbead6d69468fd5949163031c67074c2474811099ac18 · sha256:72f6faf4e445c6c1… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-158","description":"CWE-158: Improper Neutralization of Null Byte or NUL Character","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:5680dc9c241ecb76ecbfbead6d69468fd5949163031c67074c2474811099ac18 · sha256:72f6faf4e445c6c1… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion

{"product":"free5gc","vendor":"free5gc","versions":[{"status":"affected","version":"< 1.4.2"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:5680dc9c241ecb76ecbfbead6d69468fd5949163031c67074c2474811099ac18 · sha256:72f6faf4e445c6c1… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:5680dc9c241ecb76ecbfbead6d69468fd5949163031c67074c2474811099ac18 · sha256:72f6faf4e445c6c1… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions

{"cweId":"CWE-248","description":"CWE-248: Uncaught Exception","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:5680dc9c241ecb76ecbfbead6d69468fd5949163031c67074c2474811099ac18 · sha256:72f6faf4e445c6c1… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-158","description":"CWE-158: Improper Neutralization of Null Byte or NUL Character","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:5680dc9c241ecb76ecbfbead6d69468fd5949163031c67074c2474811099ac18 · sha256:72f6faf4e445c6c1… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"name":"https://github.com/free5gc/free5gc/security/advisories/GHSA-p9hg-pq3q-v9gv","tags":["x_refsource_CONFIRM"],"url":"https://github.com/free5gc/free5gc/security/advisories/GHSA-p9hg-pq3q-v9gv"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:5680dc9c241ecb76ecbfbead6d69468fd5949163031c67074c2474811099ac18 · sha256:72f6faf4e445c6c1… · /containers/cna/references/0

{"name":"https://github.com/free5gc/udm/commit/88de9fa74a1b3f3522e53b4cfa2d184712ffa4ee","tags":["x_refsource_MISC"],"url":"https://github.com/free5gc/udm/commit/88de9fa74a1b3f3522e53b4cfa2d184712ffa4ee"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:5680dc9c241ecb76ecbfbead6d69468fd5949163031c67074c2474811099ac18 · sha256:72f6faf4e445c6c1… · /containers/cna/references/1

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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