Event Monitor Cyber
EM-20261110-LYVO VulnerabilityHigh severity

git Vulnerability (CVE-2026-105437)

CVE-2026-105437

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Status
Developing

Since : signals keep joining.

First Signal
Nov 10 18:00 UTCC41 Red Hat Security Data
Page Born
Nov 10 19:17 UTCsecond source joined
Last Signal
Nov 11 05:53 UTC18 hours before snapshot
Sources
31 official · 2 research, news or crowd
Open For
22 hoursso far

Life Of This Page

  1. 1
    Born
    A second, independent source names it.
  2. 2
    Developing · Now
    New signals join; severity can move.
  3. 3
    Confirmed
    Not yet
    CISA KEV lists it, or exploitation in the wild is reported.
  4. 4
    Resolved
    Not yet
    Past the fix deadline and 14 days with no new signal.
  5. 5
    Archived
    Not yet
    30 days after resolved. Read only; the link keeps working. Reopens if it comes back.

The ID never changes, and earlier addresses keep working. A correction is logged, never overwritten. If two pages turn out to be one incident, the later one points to the earlier.

Vulnerability Lifecycle

  1. Disclosed: reached
    Nov 10 19:17 UTC
    C6 NVD published
  2. Scored: reached
    Nov 10 19:17 UTC
    CVSS 7.5
  3. Exploited: not yet
    Not yet
    No exploitation reported
  4. Advisories: not yet
    Not yet
    None yet
  5. Vendor Response: reached
    Nov 10 18:00 UTC
    C41 published
  6. Resolved: not yet
    Not yet
    After 14 quiet days

Timeline

12:0018:00Nov 1106:0012:00BornC41 Red Hat Security DataC6 NVD CVE API 2.0C31 Vulners (new public exploits)

Point at a mark to read it. Squares are signals, colored by severity; every one is also listed under Signals.

Signals

  1. Public exploit: Exploit for CVE-2026-105437 (opens source in a new tab) # CVE-2026-105437 — Git three-way merge heap buffer overflow | | | | --- | --- | | **CVE** | CVE-2026-105437 | | **Component** | Git — three-way merge machinery, `xdiff/xmerge.c` (`xdl_fill_merge_buffer()`) | |… High severityResearch & NewsC31 Vulners (new public exploits)
  2. CVE-2026-105437 (CVSS 7.5) (opens source in a new tab) Affected versions of Git have a heap buffer overflow in the three-way merge code (xdiff), which an attacker can trigger through a repository they control. When Git merges a file, it first adds up the size of the… High severityDatabaseC6 NVD CVE API 2.0
  3. Red Hat: CVE-2026-105437 (important) (opens source in a new tab) git: git: Heap corruption via integer overflow in merge size calculations High severityVendorC41 Red Hat Security Data