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CVE-2026-48830

Apache bRPC: HTTP builtin request can mark a connection authenticated and bypass auth for later requests

CVSS score

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EPSS probability

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Risk score

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Published

5 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

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Vulnerability description

DayBreach AI Explanation

Verified against sources

Apache bRPC Authentication Bypass Vulnerability

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

An improper authentication vulnerability in Apache bRPC through version 1.17.0 allows a remote unauthenticated attacker to bypass authentication for protected HTTP endpoints by sending a builtin HTTP request over the same keep-alive connection [S0].

Why does it matter?

This vulnerability can allow attackers to gain unauthorized access to protected HTTP endpoints that normally require authentication [S0].

What should be done?

  • Users are recommended to upgrade to version 1.18.0 [S0].
  • Alternatively, apply the designated pull request separately [S0].
Chain of evidence and sources2 verified claims

Apache bRPC 1.17.0 ve önceki sürümleri kimlik doğrulama atlatma zafiyetinden etkilenmektedir [S0].

S0 · daybreach-canonical

Saldırganlar aynı HTTP/1.1 keep-alive bağlantısı üzerinden dahili bir istek göndererek korumalı uç noktalardaki kimlik doğrulamasını atlayabilir [S0].

S0 · daybreach-canonical
Show the technical text from the sources

Improper authentication in Apache bRPC through 1.17.0 allows a remote unauthenticated attacker to bypass authentication for protected non-builtin HTTP endpoints by first sending a builtin HTTP request on the same HTTP/1.1 keep-alive connection. When ServerOptions.auth is enabled and builtin HTTP services are exposed on the public listener, a builtin request received as the first message on a socket may cause the connection to be treated as authenticated for later requests on that socket. Users are recommended to upgrade to version 1.18.0, which fixes this issue, or apply this PR separately: https://github.com/apache/brpc/pull/3308

CWE: CWE-287

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-48830 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1Apache Software FoundationApache bRPC View
Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
The sources have not yet published a verified CVSS metric.

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-48830 is associated with the following CWEs:

CWE-287: Improper Authentication

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-48830 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Official Sources and Advisories

https://lists.apache.org/thread/2pf15ojj0vr7rtx95677kgtl1mx3gdgbvendor-advisory

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

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Apache Software Foundation

Weakness Type (CWE & CAPEC)

CWE-287

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CVE-2026-48830 · Apache bRPC: HTTP builtin request can mark…