CVE-2026-44294 describes a Denial of Service (DoS) vulnerability affecting protobufjs versions 7.5.5 and earlier. An attacker can exploit this by providing a malicious protobuf schema or JSON descriptor, leading to runtime code generation errors and rendering affected message types unusable. The vulnerability was published on May 12, 2026, and mitigation strategies focus on schema validation and upgrading to a patched version.
影响与攻击场景翻译中…
The primary impact of CVE-2026-44294 is a denial of service. Successful exploitation prevents the use of specific protobuf message types within applications utilizing protobufjs. This can disrupt critical functionality relying on these message formats, potentially leading to application crashes or service unavailability. The attack vector involves injecting malicious control characters into protobuf field names, which are then embedded into generated JavaScript code. This triggers syntax errors during runtime code generation, effectively disabling the message type. While the vulnerability doesn't directly expose sensitive data, the disruption of service can have significant operational consequences.
利用背景翻译中…
CVE-2026-44294 is currently not listed on KEV or EPSS. The CVSS score is 5.3 (Medium), indicating a moderate probability of exploitation. No public Proof-of-Concept (PoC) code has been publicly released as of the publication date. Active campaigns targeting this vulnerability are not currently known, but the ease of schema manipulation suggests potential for future exploitation.
威胁情报
漏洞利用状态
CVSS 向量
这些指标意味着什么？
- Attack Vector
- 网络 — 可通过互联网远程利用，无需物理或本地访问。攻击面最大。
- Attack Complexity
- 低 — 无需特殊条件，可以稳定地利用漏洞。
- Privileges Required
- 无 — 无需认证，无需凭证即可利用。
- User Interaction
- 无 — 攻击自动且无声，受害者无需任何操作。
- Scope
- 未改变 — 影响仅限于脆弱组件本身。
- Confidentiality
- 无 — 无机密性影响。
- Integrity
- 无 — 无完整性影响。
- Availability
- 低 — 部分或间歇性拒绝服务。
受影响的软件
弱点分类 (CWE)
时间线
- 发布日期
缓解措施和替代方案翻译中…
The recommended mitigation for CVE-2026-44294 is to upgrade to a patched version of protobufjs. Unfortunately, a fixed version is not yet available. As a workaround, implement strict input validation on any protobuf schemas or JSON descriptors received from untrusted sources. This validation should specifically filter out or escape control characters that could be exploited. Consider using a Web Application Firewall (WAF) to inspect and block malicious protobuf payloads. Thoroughly review and sanitize any external data used to construct protobuf messages.
修复方法翻译中…
暂无官方补丁。请查找临时解决方案或持续关注更新。
常见问题翻译中…
What is CVE-2026-44294 — DoS in protobufjs ≤7.5.5?
CVE-2026-44294 is a Denial of Service vulnerability in protobufjs versions up to 7.5.5. A malicious protobuf schema can cause runtime code generation to fail, rendering message types unusable.
Am I affected by CVE-2026-44294 in protobufjs?
If you are using protobufjs version 7.5.5 or earlier and process protobuf schemas from untrusted sources, you are potentially affected by this vulnerability.
How do I fix CVE-2026-44294 in protobufjs?
A patched version is not yet available. Implement strict input validation on protobuf schemas and consider using a WAF to block malicious payloads.
Is CVE-2026-44294 being actively exploited?
As of the publication date, there are no known active campaigns exploiting CVE-2026-44294, but the vulnerability's nature suggests potential for future exploitation.
Where can I find the official protobufjs advisory for CVE-2026-44294?
Refer to the protobufjs project's official website and GitHub repository for updates and advisories related to CVE-2026-44294.
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