CVE-2026-32875
HIGHCVSS v3.1: 7.5 · EPSS: 0.0041 (32.8 パーセンタイル)
出典データ取得時点:
概要
- 深刻度
- HIGH
- CVSS
- 7.5 v3.1 · NVD
- EPSS
- 0.0041 (32.8 パーセンタイル) · FIRST.org
- CISA KEV
- 非該当
- タイプ
- Integer Overflow, Out-of-bounds Write · NVD CWE
- 攻撃条件（CVSSベクター）
- ネットワーク権限不要操作不要 · 出典: NVD ベクター
- 影響を受けるベンダー
- ultrajson_project
- 公開日
- 2026-03-20 · 更新日: 2026-06-30
- 参照情報
- 参照情報へ移動 (6)
CVSS / EPSS / KEV
出典 — CVSS: NVD · EPSS: FIRST.org · KEV: CISA. データと出典
説明
UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Versions 5.10 through 5.11.0 are vulnerable to buffer overflow or infinite loop through large indent handling. ujson.dumps() crashes the Python interpreter (segmentation fault) when the product of the indent parameter and the nested depth of the input exceeds INT32_MAX. It can also get stuck in an infinite loop if the indent is a large negative number. Both are caused by an integer overflow/underflow whilst calculating how much memory to reserve for indentation. And both can be used to achieve denial of service. To be vulnerable, a service must call ujson.dump()/ujson.dumps()/ujson.encode() whilst giving untrusted users control over the indent parameter and not restrict that indentation to reasonably small non-negative values. A service may also be vulnerable to the infinite loop if it uses a fixed negative indent. An underflow always occurs for any negative indent when the input data is at least one level nested but, for small negative indents, the underflow is usually accidentally rectified by another overflow. This issue has been fixed in version 5.12.0.
参照情報
NVDが列挙した参照URLを、リンクのホスト・パターンに対する機械的な一致でグループ化したもの。ラベルはリンクの種別のみを示します。
- パッチ https://github.com/ultrajson/ultrajson/commit/486bd4553dc471a1de11613bc7347a6b318e37ea
- 参照 https://github.com/ultrajson/ultrajson/issues/700
- ベンダー勧告 https://github.com/ultrajson/ultrajson/security/advisories/GHSA-c8rr-9gxc-jprv
- ディストリ https://access.redhat.com/security/cve/CVE-2026-32875
- ディストリ https://bugzilla.redhat.com/show_bug.cgi?id=2449400
- ディストリ https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32875.json