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CVE-2026-3288· NVD / CVE Program· CNA kubernetes

ingress-nginx rewrite-target nginx configuration injection

Noroxi assessment

Priority: Monitor (action score 35/100)

  • Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.74% (FIRST EPSS); higher than 53.7% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Kubernetes ingress-nginx 1.13.8, 1.14.4, 1.15.0.

Low priority for now. Upgrade to Kubernetes ingress-nginx 1.13.8, 1.14.4, 1.15.0 or later.

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 security issue was discovered in ingress-nginx where the `nginx.ingress.kubernetes.io/rewrite-target` Ingress annotation can be used to inject configuration into nginx. This can lead to arbitrary code execution in the context of the ingress-nginx controller, and disclosure of Secrets accessible to the controller. (Note that in the default installation, the controller can access all Secrets cluster-wide.)

HighCVSS 8.8 · v3.1—Proof of concept Fix available
Published
Mar 9, 2026
Updated
Jun 17, 2026
EPSS
0.7% · 53th percentile

Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.7%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · kubernetes
8.8
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
  • Proof of concept exists, no weaponized module
  • A fix has been released

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

Follow CVE-2026-3288

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.

VendorProduct
kubernetesingress-nginx

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • kubernetes ingress-nginxbefore 1.13.8
  • kubernetes ingress-nginx1.14.0 and later · before 1.14.4

Versions reported by the vendor

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

  • Kubernetes ingress-nginx

    • before 1.13.8affected · semver
    • before 1.14.4affected · semver
    • before 1.15.0affected · semver

Same product

kubernetes: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-1974ingress-nginx admission controller RCE escalation
    69This week
  • CVE-2025-1098ingress-nginx controller - configuration injection via unsanitized mirror annotations
    60This week
  • CVE-2023-5044Code injection via nginx.ingress.kubernetes.io/permanent-redirect annotation
    52Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-24513Feb 3, 2026 · ingress-nginx auth-url protection bypass
    12Monitor
  • ← EarlierCVE-2026-24514Feb 3, 2026 · ingress-nginx Admission Controller denial of service
    26Monitor
  • ← EarlierCVE-2025-15566Feb 6, 2026 · ingress-nginx auth-proxy-set-headers nginx configuration injection
    35Monitor

Remediation

Which version to upgrade to

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

Product / packageFixed versionSource
Kubernetes ingress-nginx1.13.8Vendor (CNA)
Kubernetes ingress-nginx1.14.4Vendor (CNA)
Kubernetes ingress-nginx1.15.0Vendor (CNA)

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Proof-of-concept repository on GitHub ×2

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHubstars:22026-03-10
Proof-of-concept repository on GitHubstars:12026-04-08

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.

  1. Published
  2. First PoCsame day
  3. TodayOct 19, 2026+223 d
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.

Variant candidates

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

  • CVE-2025-1098350 days apartingress-nginx controller - configuration injection via unsanitized mirror annotations
    60This week
  • CVE-2025-1097350 days apartingress-nginx controller - configuration injection via unsanitized auth-tls-match-cn annotation
    45Plan
  • CVE-2025-24514350 days apartingress-nginx controller - configuration injection via unsanitized auth-url annotation
    44Plan
  • CVE-2025-1556631 days apartingress-nginx auth-proxy-set-headers nginx configuration injection
    35Monitor
  • CVE-2026-158034 days apartingress-nginx auth-method nginx configuration injection
    35Monitor
  • CVE-2026-2451234 days apartingress-nginx auth-method nginx configuration injection
    35Monitor

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

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

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

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.

Change log

  1. Fix✗ → ✓

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

References

Show all references (2 more)

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

All records