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CVE-2026-16615

A flaw was found in librest. The PKCE implementation for OAuth authorization uses the GRand function from the GLib API, a cryptographically insecure pseudo-random number generator. Because the generated "code verifier" lacks sufficient cryptographic entropy, a malicious actor can reverse-engineer the pseudo-random number generator (PRNG) seed to predict or reconstruct the code verifier string, allowing an attacker to bypass PKCE protections and successfully impersonate the client during the OAut
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b3d7ac5e6eb6878be43be60f1cd561f3b70b3646e0046e5ce7e2d50f4a68ff06
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"collectionURL":"https://gitlab.gnome.org/GNOME/librest","defaultStatus":"affected","packageName":"librest","product":"librest","vendor":"GNOME"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e2571bce33877c1f1544a76890c4dbf19e677c34d8b1d6fb42e4fee58a17e608 · sha256:ff1231e860e0db1d… · /containers/cna/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10.2"],"defaultStatus":"affected","packageName":"rest","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:0.9.1-11.el10_2.1","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e2571bce33877c1f1544a76890c4dbf19e677c34d8b1d6fb42e4fee58a17e608 · sha256:ff1231e860e0db1d… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"collectionURL":"https://gitlab.gnome.org/GNOME/librest","defaultStatus":"affected","packageName":"librest","product":"librest","vendor":"GNOME"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e2571bce33877c1f1544a76890c4dbf19e677c34d8b1d6fb42e4fee58a17e608 · sha256:ff1231e860e0db1d… · /containers/cna/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10.2"],"defaultStatus":"affected","packageName":"rest","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:0.9.1-11.el10_2.1","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e2571bce33877c1f1544a76890c4dbf19e677c34d8b1d6fb42e4fee58a17e608 · sha256:ff1231e860e0db1d… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.8,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e2571bce33877c1f1544a76890c4dbf19e677c34d8b1d6fb42e4fee58a17e608 · sha256:ff1231e860e0db1d… · /containers/cna/metrics/1/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-338","description":"Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e2571bce33877c1f1544a76890c4dbf19e677c34d8b1d6fb42e4fee58a17e608 · sha256:ff1231e860e0db1d… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"RHSA-2026:47085","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:47085"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e2571bce33877c1f1544a76890c4dbf19e677c34d8b1d6fb42e4fee58a17e608 · sha256:ff1231e860e0db1d… · /containers/cna/references/0
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-16615"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e2571bce33877c1f1544a76890c4dbf19e677c34d8b1d6fb42e4fee58a17e608 · sha256:ff1231e860e0db1d… · /containers/cna/references/1
{"name":"RHBZ#2504432","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2504432"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e2571bce33877c1f1544a76890c4dbf19e677c34d8b1d6fb42e4fee58a17e608 · sha256:ff1231e860e0db1d… · /containers/cna/references/2
{"url":"https://gitlab.gnome.org/GNOME/librest/-/issues/25"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e2571bce33877c1f1544a76890c4dbf19e677c34d8b1d6fb42e4fee58a17e608 · sha256:ff1231e860e0db1d… · /containers/cna/references/3

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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