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VulnerabilityPublished Updated

CVE-2026-78426: SUSE neuvector · Incorrect Authorization

Affects SUSE neuvectorSource CVE Database V5

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Not known to be exploited · CVSS 2.0 Low : upgrade to 5.6.2 when convenient.

Data as of 1 Nov 2026, 11:03 UTC

CVSS 4.0 base score
2.0Low
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 5.6.2
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 17 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 1 Nov 2026.

What to do

Upgrade neuvector and github.com/neuvector/neuvector to 5.6.2.

Affected software

ProductAffectedFixed in
SUSEneuvectorAffected
  • <5.6.2
Fixed in
  • 5.6.2
Gogithub.com/neuvector/neuvectorpkg:golang/github.com/neuvector/neuvectorOther threatsAffected
  • <5.6.2
Fixed in
  • 5.6.2
GitHubneuvectorpkg:github/neuvectorOther threatsAffected
  • <5.6.2
Fixed in
  • 5.6.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

No other specific mitigations are indicated.

Description

The NeuVector JWT verifier accepts noncanonical Base64URL encodings of the same RSA signature field. An attacker holding a valid JWT that has not expired, but was logged out of NeuVector, can continue using the non-expired token with equivalent spelling of the RSA signature field until the token validity expires.

References

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