CVE-2026-55882: Tilt Unauthenticated Pprof Debug Endpoints On Vulnerability

HIGH
Advisory Identifier: GHSA-p749-9w62-w533
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CWE-200
Published
Advisory Summary

CVE-2026-55882 is a HIGH unauthenticated pprof debug endpoints on vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Tilt libraries in the Go ecosystem. The issue involves unauthenticated pprof debug endpoints on the tilt hud server. Remediation is available by upgrading affected packages to version 0.37.4.

CVE-2026-55882 at a Glance

CVE Identifier CVE-2026-55882
GHSA Identifier GHSA-p749-9w62-w533
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected Product Tilt
Package Ecosystem Go
Published Date
Last Updated

How to Fix CVE-2026-55882

To remediate this vulnerability, upgrade all affected Tilt dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/tilt-dev/tilt fixed: 0.37.4 
Upgrade github.com/tilt-dev/tilt to 0.37.4
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/tilt-dev/tilt

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-55882, inspect your project dependencies for Tilt:

inspect dependencies for github.com/tilt-dev/tilt

Analyze the terminal output to locate any version of Tilt in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.37.4), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. In Tilt, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

## Summary The Tilt HUD server mounts Go's `net/http/pprof` handlers under `/debug` with no access control. When the HUD is network-exposed, an attacker can read process memory — including session and apiserver tokens — and hold the process under profiling. ## Details A blank import of `net/http/pprof` registers its handlers on `http.DefaultServeMux`, which the HUD controller mounts under `/debug` on both the web router and the apiserver listener. `/debug/pprof/heap` and `/goroutine` expose process memory, including the session token (also issued in the `Tilt-Token` cookie) and the apiserver loopback bearer token; `/profile` and `/trace` let a caller sample the process for an arbitrary duration. ## Impact An unauthenticated caller who can reach the listener can extract process memory — including the session and apiserver tokens — and degrade performance by holding the process under CPU profiling or tracing. The leaked tokens compound the missing-authentication finding on the same server. ### Conditions for exploitation - Affected version in `>= 0.19.5, <= 0.37.3`. - HUD (or apiserver) listener bound to a non-loopback address (`tilt up --host 0.0.0.0`, or `TILT_HOST` set). - Network reachability to the listener (default port `10350`). ### Not affected - The default loopback-only bind is not reachable from the network. ## Workarounds Use the default loopback bind (omit `--host`, unset `TILT_HOST`) so `/debug` is not remotely reachable. No complete workaround short of upgrading for non-loopback deployments.

CVE-2026-55882 Affected Tilt Versions

1 component(s)
Fixed Versions:
0.37.4
Product / Package Ecosystem Affected Versions Fixed Version
github.com/tilt-dev/tilt
golang/github.com/tilt-dev/tilt
Go
≥ 0.19.5
< 0.37.4
0.37.4

References

GitHub Advisory / Wiki ADVISORY
https://github.com/tilt-dev/tilt/security/advisories/GHSA-p749-9w62-w533
Tilt Source Repository REPOSITORY
https://github.com/tilt-dev/tilt/pull/6776
Tilt Source Repository REPOSITORY
https://github.com/tilt-dev/tilt
Tilt Release RELEASE
https://github.com/tilt-dev/tilt/releases/tag/v0.37.4

Frequently Asked Questions

What is CVE-2026-55882?
CVE-2026-55882 is a security vulnerability in Tilt involving Unauthenticated pprof debug endpoints on the Tilt HUD server under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Which Tilt versions are affected?
Affected versions include releases prior to 0.37.4 across affected packages: github.com/tilt-dev/tilt.
What version fixes CVE-2026-55882?
Upgrading to 0.37.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/tilt-dev/tilt affected?
Yes, github.com/tilt-dev/tilt is affected in releases prior to 0.37.4. Upgrade your dependency to 0.37.4 or later.
What CWE is associated with CVE-2026-55882?
CVE-2026-55882 is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor (The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.).
How can I check Go dependencies for CVE-2026-55882?
Run the dependency tree command: 'inspect dependencies for github.com/tilt-dev/tilt'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-p749-9w62-w533",
  "modified" : "2026-06-19T13:52:17Z",
  "published" : "2026-06-19T13:52:17Z",
  "aliases" : [ "CVE-2026-55882" ],
  "summary" : "Tilt: Unauthenticated pprof debug endpoints on the Tilt HUD server",
  "details" : "## Summary\nThe Tilt HUD server mounts Go's `net/http/pprof` handlers under `/debug` with no access control. When the HUD is network-exposed, an attacker can read process memory — including session and apiserver tokens — and hold the process under profiling.\n\n## Details\nA blank import of `net/http/pprof` registers its handlers on `http.DefaultServeMux`, which the HUD controller mounts under `/debug` on both the web router and the apiserver listener. `/debug/pprof/heap` and `/goroutine` expose process memory, including the session token (also issued in the `Tilt-Token` cookie) and the apiserver loopback bearer token; `/profile` and `/trace` let a caller sample the process for an arbitrary duration.\n\n## Impact\nAn unauthenticated caller who can reach the listener can extract process memory — including the session and apiserver tokens — and degrade performance by holding the process under CPU profiling or tracing. The leaked tokens compound the missing-authentication finding on the same server.\n\n### Conditions for exploitation\n- Affected version in `>= 0.19.5, <= 0.37.3`.\n- HUD (or apiserver) listener bound to a non-loopback address (`tilt up --host 0.0.0.0`, or `TILT_HOST` set).\n- Network reachability to the listener (default port `10350`).\n\n### Not affected\n- The default loopback-only bind is not reachable from the network.\n\n## Workarounds\nUse the default loopback bind (omit `--host`, unset `TILT_HOST`) so `/debug` is not remotely reachable. No complete workaround short of upgrading for non-loopback deployments.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/tilt-dev/tilt"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.19.5"
      }, {
        "fixed" : "0.37.4"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 0.37.3"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/tilt-dev/tilt/security/advisories/GHSA-p749-9w62-w533"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/tilt-dev/tilt/pull/6776"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/tilt-dev/tilt"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/tilt-dev/tilt/releases/tag/v0.37.4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-06-19T13:52:17Z",
    "nvd_published_at" : null
  }
}