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CVE-2017-9233
XML External Entity vulnerability in libexpat 2.2.0 and earlier (Expat XML Parser Library) allows attackers to put the parser in an…
High7.5EPSS 8.7%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
XML External Entity vulnerability in libexpat 2.2.0 and earlier (Expat XML Parser Library) allows attackers to put the parser in an infinite loop using a malformed external entity definition from an external DTD.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 8.7% · top 4.8% of all CVEs (2 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
n/a
- affected n/a
References (13)
- https://support.apple.com/HT208144 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://libexpat.github.io/doc/cve-2017-9233/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/libexpat/libexpat/blob/master/expat/Changes (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1039427 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- https://support.apple.com/HT208113 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support.apple.com/HT208112 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support.apple.com/HT208115 (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-3898 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 99276 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- [oss-security] 20170618 Expat 2.2.1 security fixes (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://support.f5.com/csp/article/K03244804 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [bookkeeper-issues] 20210628 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [bookkeeper-issues] 20210629 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .