CVE-2026-63770 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-63770HIGH

glanceapp glance — Glance 0.8.5 IP Spoofing Authentication Brute-Force Protection Bypass

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   P   N   N   H   N   N    8.2   .0020    9.9     —

AFFECTED
  Product  Versions     Fixed
  glance   unspecified  —

TIMELINE
  Jul 18  Reserved by VulnCheck
  Jul 20  Published (CNA: VulnCheck)
  Jul 21  EXPLOIT PUBLISHED — CVE-2026-63770 (glanceapp glance). Public exploit reference added.
  Jul 27  EXPLOIT PUBLISHED — CVE-2026-63770 (glanceapp glance). Public exploit reference added.

CWE-348 · CNA: VulnCheck · CVSS v4.0 · 3 references · NVD status: Deferred

Description

Glance through 0.8.5 contains an IP address spoofing vulnerability in the authentication handler that allows unauthenticated attackers to bypass brute-force lockout protections by supplying arbitrary values in the X-Forwarded-For request header when the server proxied option is enabled. Attackers can manipulate the leftmost value of the X-Forwarded-For header to make each login attempt appear to originate from a distinct IP address, preventing the per-IP failed-login counter from reaching the lockout threshold and enabling unlimited credential guessing against the authentication endpoint.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
July 18, 2026	Reserved	Reserved by VulnCheck
July 20, 2026	Published	Published (CNA: VulnCheck)
July 21, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-63770 (glanceapp glance). Public exploit reference added.
July 27, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-63770 (glanceapp glance). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
glanceapp	glance	—	—	—

Weaknesses

CWE-348

References (3)

https://github.com/glanceapp/glance/issues/1031 [technical-description, exploit, issue-tracking]
https://github.com/glanceapp/glance/pull/1033 [issue-tracking, patch]
https://www.vulncheck.com/advisories/glance-ip-spoofing-authentication-brute-force-protection-bypass [third-party-advisory]

Authoritative record: CVE-2026-63770 at cve.org

Vendors: glanceapp

Weaknesses: CWE-348

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-63770 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.