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01 Record

CVE-2026-53587

libgit2 - Unauthenticated network-reachable heap out-of-bounds read in transports/smart_pkt.c:set_data

HighPUBLISHEDCNA: GitHub_M
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
View raw JSON

02 Description

libgit2 - Unauthenticated network-reachable heap out-of-bounds read in transports/smart_pkt.c:set_data

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.47% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 40.3% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Awaiting Analysis. NVD last modified this record on 2026-10-26.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-08-20 18:36Z2 MO AGO
Last updated
2026-08-20 19:18Z2 MO AGO
Reserved
2026-06-09
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-20Improper Input ValidationClass
  • CWE-125Out-of-bounds ReadBase
  • CWE-126Buffer Over-readVariant
  • CWE-1284Improper Validation of Specified Quantity in InputBase
Data version
5.2
Document digest
34f8bcd59ebe66e3e642339e380736b4c1295529667187222334a454d1339b7d

05 Affected products

VendorProductVersionsPlatforms
libgit2libgit2< 1.8.6, >= 1.9.0, < 1.9.5—

06 References

07 Fixed in

AlmaLinux 9

  • cargo
    Fixed in 1.92.0-2.el9_8
  • clippy
    Fixed in 1.92.0-2.el9_8
  • rust
    Fixed in 1.92.0-2.el9_8
  • rust-analyzer
    Fixed in 1.92.0-2.el9_8
  • rust-debugger-common
    Fixed in 1.92.0-2.el9_8
  • rust-doc
    Fixed in 1.92.0-2.el9_8
  • rust-gdb
    Fixed in 1.92.0-2.el9_8
  • rust-lldb
    Fixed in 1.92.0-2.el9_8
  • rust-src
    Fixed in 1.92.0-2.el9_8
  • rust-std-static
    Fixed in 1.92.0-2.el9_8
  • rust-std-static-wasm32-unknown-unknown
    Fixed in 1.92.0-2.el9_8
  • rust-std-static-wasm32-wasip1
    Fixed in 1.92.0-2.el9_8
  • rust-toolset
    Fixed in 1.92.0-2.el9_8
  • rustfmt
    Fixed in 1.92.0-2.el9_8

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

AlmaLinux 10

  • cargo
    Fixed in 1.92.0-2.el10_2.alma.1
  • clippy
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-analyzer
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-debugger-common
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-doc
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-gdb
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-lldb
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-src
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-std-static
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-std-static-aarch64-unknown-none-softfloat
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-std-static-wasm32-unknown-unknown
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-std-static-wasm32-wasip1
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-std-static-x86_64-unknown-none
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-toolset
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-toolset-srpm-macros
    Fixed in 1.92.0-2.el10_2.alma.1
  • rustfmt
    Fixed in 1.92.0-2.el10_2.alma.1

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 9

  • cargo
    Fixed in 1.92.0-2.el9_8
  • clippy
    Fixed in 1.92.0-2.el9_8
  • rust
    Fixed in 1.92.0-2.el9_8
  • rust-analyzer
    Fixed in 1.92.0-2.el9_8
  • rust-debugger-common
    Fixed in 1.92.0-2.el9_8
  • rust-doc
    Fixed in 1.92.0-2.el9_8
  • rust-gdb
    Fixed in 1.92.0-2.el9_8
  • rust-lldb
    Fixed in 1.92.0-2.el9_8
  • rust-src
    Fixed in 1.92.0-2.el9_8
  • rust-std-static
    Fixed in 1.92.0-2.el9_8
  • rust-std-static-wasm32-unknown-unknown
    Fixed in 1.92.0-2.el9_8
  • rust-std-static-wasm32-wasip1
    Fixed in 1.92.0-2.el9_8
  • rust-toolset
    Fixed in 1.92.0-2.el9_8
  • rustfmt
    Fixed in 1.92.0-2.el9_8

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 10

  • cargo
    Fixed in 1.92.0-2.el10_2.alma.1
  • clippy
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-analyzer
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-debugger-common
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-doc
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-gdb
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-lldb
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-src
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-std-static
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-std-static-aarch64-unknown-none-softfloat
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-std-static-wasm32-unknown-unknown
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-std-static-wasm32-wasip1
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-std-static-x86_64-unknown-none
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-toolset
    Fixed in 1.92.0-2.el10_2.alma.1
  • rust-toolset-srpm-macros
    Fixed in 1.92.0-2.el10_2.alma.1
  • rustfmt
    Fixed in 1.92.0-2.el10_2.alma.1

Derived from AlmaLinux 10. Partial coverage: only packages taken from AlmaLinux 10 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • libgit2
    Fixed in 1.9.0+ds-2+deb13u1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • libgit2
    Fixed in 1.9.6+ds-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • libgit2
    Fixed in 1.7.2+ds-1ubuntu3.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.04 LTS

  • libgit2
    Fixed in 1.9.1+ds-1ubuntu1.1

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.