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CVE-2026-78545: The Okta Access Gateway does not sanitize the application label field before including it in the generated ngi

31
Routine
MEDIUM 6.6UPGRADE

CVE-2026-78545 is a medium-severity flaw (CVSS 6.6) affecting access gateway. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Okta Access Gateway does not sanitize the application label field before including it in the generated nginx configuration file. The unsanitized value is interpolated into an nginx server block directive, resulting in execution of injected directives.

Why this priority

  • No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score6.6 (Medium)
Attack vectorNetwork (remote)
Attack complexityHigh
Privileges neededHigh
User interactionNone
EPSS exploit chance0.4% (top 68%)
CISA exploited listNo
WeaknessCWE-94
Published2026-09-08
Last modified2026-09-29
Publisher (CNA): Okta · Vendor: okta

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Last updated 2026-09-29 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

okta access gateway UPGRADE
Affected: < 2026.9.1
Fixed in: 2026.9.1
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy access-gateway || rpm -q access-gateway || access-gateway --version
2. UPGRADE to 2026.9.1 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade access-gateway
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade access-gateway
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-78545?

access gateway: upgrade to 2026.9.1. Exact commands for each OS are on this page.

Is CVE-2026-78545 being exploited?

CVE-2026-78545 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-78545 affect?

CVE-2026-78545 affects access gateway. Severity is medium (CVSS 6.6). The Okta Access Gateway does not sanitize the application label field before including it in the generated nginx configuration file. The unsanitized value is interpolated into an nginx server block directive, resulting in execution of injec

How urgent is CVE-2026-78545?

Priority 31/100. No elevated risk signals yet.

Software pages

nginx vulnerabilities · Okta vulnerabilities

Related CVEs

References

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