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CVE-2026-8746

A security flaw has been discovered in Open5GS up to 2.7.7. Affected by this issue is the function discover_handler in the library /lib/sbi/nghttp2-server.c of the component NRF. The manipulation results in use after free. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:c4b9b626f0a10f43623fa09854107a6caa42131a9f59efd05d8a60851ee20ced
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 4 assertions

{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6002ba91c54a4c542d2fd83ed90e3b93aa2db8826aa591e57a7a28fbaf88a9cb · sha256:d8debe2a7fa120b2… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"baseScore":4.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6002ba91c54a4c542d2fd83ed90e3b93aa2db8826aa591e57a7a28fbaf88a9cb · sha256:d8debe2a7fa120b2… · /containers/cna/metrics/2/cvssV3_0

{"metric":{"baseScore":4.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6002ba91c54a4c542d2fd83ed90e3b93aa2db8826aa591e57a7a28fbaf88a9cb · sha256:d8debe2a7fa120b2… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"baseScore":4,"vectorString":"AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6002ba91c54a4c542d2fd83ed90e3b93aa2db8826aa591e57a7a28fbaf88a9cb · sha256:d8debe2a7fa120b2… · /containers/cna/metrics/3/cvssV2_0
cwe · 2 assertions

{"cweId":"CWE-416","description":"Use After Free","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6002ba91c54a4c542d2fd83ed90e3b93aa2db8826aa591e57a7a28fbaf88a9cb · sha256:d8debe2a7fa120b2… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-119","description":"Memory Corruption","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6002ba91c54a4c542d2fd83ed90e3b93aa2db8826aa591e57a7a28fbaf88a9cb · sha256:d8debe2a7fa120b2… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"cpes":["cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*"],"modules":["NRF"],"product":"Open5GS","vendor":"n/a","versions":[{"status":"affected","version":"2.7.0"},{"status":"affected","version":"2.7.1"},{"status":"affected","version":"2.7.2"},{"status":"affected","version":"2.7.3"},{"status":"affected","version":"2.7.4"},{"status":"affected","version":"2.7.5"},{"status":"affected","version":"2.7.6"},{"status":"affected","version":"2.7.7"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6002ba91c54a4c542d2fd83ed90e3b93aa2db8826aa591e57a7a28fbaf88a9cb · sha256:d8debe2a7fa120b2… · /containers/cna/affected/0

Provider-owned CVSS observations

4 source assertions
{"metric":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6002ba91c54a4c542d2fd83ed90e3b93aa2db8826aa591e57a7a28fbaf88a9cb · sha256:d8debe2a7fa120b2… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"baseScore":4.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6002ba91c54a4c542d2fd83ed90e3b93aa2db8826aa591e57a7a28fbaf88a9cb · sha256:d8debe2a7fa120b2… · /containers/cna/metrics/2/cvssV3_0
{"metric":{"baseScore":4.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6002ba91c54a4c542d2fd83ed90e3b93aa2db8826aa591e57a7a28fbaf88a9cb · sha256:d8debe2a7fa120b2… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"baseScore":4,"vectorString":"AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6002ba91c54a4c542d2fd83ed90e3b93aa2db8826aa591e57a7a28fbaf88a9cb · sha256:d8debe2a7fa120b2… · /containers/cna/metrics/3/cvssV2_0

CWE assertions

2 source assertions
{"cweId":"CWE-416","description":"Use After Free","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6002ba91c54a4c542d2fd83ed90e3b93aa2db8826aa591e57a7a28fbaf88a9cb · sha256:d8debe2a7fa120b2… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-119","description":"Memory Corruption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6002ba91c54a4c542d2fd83ed90e3b93aa2db8826aa591e57a7a28fbaf88a9cb · sha256:d8debe2a7fa120b2… · /containers/cna/problemTypes/1/descriptions/0

Source references

6 source assertions
{"tags":["product"],"url":"https://github.com/open5gs/open5gs/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6002ba91c54a4c542d2fd83ed90e3b93aa2db8826aa591e57a7a28fbaf88a9cb · sha256:d8debe2a7fa120b2… · /containers/cna/references/4
{"tags":["exploit","issue-tracking"],"url":"https://github.com/open5gs/open5gs/issues/4476"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6002ba91c54a4c542d2fd83ed90e3b93aa2db8826aa591e57a7a28fbaf88a9cb · sha256:d8debe2a7fa120b2… · /containers/cna/references/3
{"name":"Submit #817032 | Open5GS NRF v2.7.7 Denial of Service","tags":["third-party-advisory"],"url":"https://vuldb.com/submit/817032"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6002ba91c54a4c542d2fd83ed90e3b93aa2db8826aa591e57a7a28fbaf88a9cb · sha256:d8debe2a7fa120b2… · /containers/cna/references/2
{"tags":["exploit"],"url":"https://vuldb.com/submit/817032"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6002ba91c54a4c542d2fd83ed90e3b93aa2db8826aa591e57a7a28fbaf88a9cb · sha256:d8debe2a7fa120b2… · /containers/adp/0/references/0
{"name":"VDB-364333 | Open5GS NRF nghttp2-server.c discover_handler use after free","tags":["vdb-entry","technical-description"],"url":"https://vuldb.com/vuln/364333"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6002ba91c54a4c542d2fd83ed90e3b93aa2db8826aa591e57a7a28fbaf88a9cb · sha256:d8debe2a7fa120b2… · /containers/cna/references/0
{"name":"VDB-364333 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"],"url":"https://vuldb.com/vuln/364333/cti"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6002ba91c54a4c542d2fd83ed90e3b93aa2db8826aa591e57a7a28fbaf88a9cb · sha256:d8debe2a7fa120b2… · /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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