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CVE.org (no NVD analysis yet)· CNA redhat

CVE-2026-83589: Oauth-proxy: open redirect via /\ and /\t bypass in post-login redirect

Noroxi assessment

Priority: Monitor (action score 24/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.29% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A flaw was found in oauth-proxy. The application fails to properly validate the destination redirect parameter (`rd`) during post-login redirection. A remote attacker can exploit this vulnerability by enticing a user to follow a specially crafted link, resulting in the user being redirected to an arbitrary external website after authenticating. This open redirect can be leveraged to conduct phishing attacks or credential theft.

MediumCVSS 6.1 · v3.1—No exploit No fix recorded
Published
Oct 1, 2026
Updated
Oct 30, 2026
EPSS
0.2% · 21th percentile

Report tools

JSON

Action score

24

Monitor

Low priority for now.

CVSS
24 / 40 · 6.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · redhat
6.1
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-83589

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • Red Hat Red Hat OpenShift Container Platform 4.12

    • 1792974337 and laternot affected · rpm

  • Red Hat Red Hat OpenShift Container Platform 4.14

    • 1791837363 and laternot affected · rpm

  • Red Hat Red Hat OpenShift Container Platform 4.15

    • 1791632336 and laternot affected · rpm

  • Red Hat Red Hat OpenShift Container Platform 4.16

    • 1792878232 and laternot affected · rpm

  • Red Hat Red Hat OpenShift Container Platform 4.18

    • 1790882320 and laternot affected · rpm

  • Red Hat Red Hat OpenShift Container Platform 4.19

    • 1790807096 and laternot affected · rpm

  • Red Hat Red Hat OpenShift Container Platform 4.20

    • 1790704224 and laternot affected · rpm

  • Red Hat Red Hat OpenShift Container Platform 4.21

    • 1790706478 and laternot affected · rpm

  • Red Hat Red Hat OpenShift Container Platform 4.22

    • 1790724885 and laternot affected · rpm

  • Red Hat Red Hat OpenShift Container Platform 5

    • all versionsunknown

Same product

red hat: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-75885Openshift/console: openshift/console: unauthenticated ssrf and resource exhaustion via devfile parser endpoint
    37Monitor
  • CVE-2026-104795Insights-runtime-extractor: insights-runtime-extractor: container escape via privileged binary execution
    35Monitor
  • CVE-2026-15801Cri-o: cri-o: insufficient validation during container checkpoint restore
    32Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-75887Sep 23, 2026 · Openshift/console: openshift/console: unauthenticated path traversal in i18n locale handler
    30Monitor
  • ← EarlierCVE-2026-62146Sep 30, 2026 · Cri-o: cri-o: sandbox state poisoning via pod annotations may expose runtime socket
    31Monitor
  • Later →CVE-2026-76061Oct 6, 2026 · Cri-o: cri-o: bind_mount_prefix intermediate-symlink prefix bypass
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-1907851 days apartOse-oauth-server: oauth-server: open redirect vulnerability enables phishing via unvalidated parameter.
    17Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-601 · URL Redirection to Untrusted Site ('Open Redirect')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. SSVC exploitation— → none
  2. Exploit maturity— → none

For records you follow, these changes also arrive as notifications. →

References

Show all references (10 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records