expat before version 2.4.0 does not properly handle entities expansion unless an application developer uses the XML_SetEntityDeclHandler function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because expat already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed, and each affected application would need its own CVE.
結論預警: CVE-2013-0340 綜合評估為高可利用風險（76.9/100）：CVSS 技術影響為中級，利用機率偏高（EPSS 20.09%，百分位 97%） 核心證據: 已收錄 1 筆公開利用參考（Exploit-DB）。 強制指令: 存在公開利用—請盤點暴露面、落實緩解措施並優先修補。
風險隨態勢動態變化；本站持續評估並同步更新本頁展示內容。
| EDB-ID | 來源 | 類型 | 公開時間 | 連結 |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS 日更估計相對被利用可能性；百分位表示該 CVE 在已評分漏洞中的相對排名（越高表示相對更嚴重）。
| # | 日期 | 舊 EPSS 分數 | 新 EPSS 分數 | 變化（新 − 舊） |
|---|---|---|---|---|
| 1 | 2026-07-14 | 19.43% | 20.09% | +0.66% |
| 2 | 2026-06-15 | 0.05% | 19.43% | +19.38% |
| 3 | 2026-01-04 | — | 0.05% | — |
完整 EPSS 歷史 （共 13 筆）
該 CVE 的 CVSS 指標。
| 底座分 | 版本 | 嚴重度 | 向量 | 可利用性 | 影響 | 分數來源 |
|---|---|---|---|---|---|---|
| 6.8 | 2.0 | MEDIUM |
|
8.6 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2013-0340 unimportant priority: Debian including 2 source packages (expat, libxmltok), 7 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 3. | https://security-tracker.debian.org/tracker/CVE-2013-0340 |
gentoo
|
normal | CVE-2013-0340: 1 GLSA(s) (201701-21), 1 atom(s) (dev-libs/expat); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2013-0340 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2013-0340 |
suse
|
medium | CVE-2013-0340 severity moderate: SUSE including 276 source package names (13.2-9.1:libexpat1-2.7.1-slfo.1.1_1.1, 2.1.3-6.18:libexpat1-2.7.1-slfo.1.1_1.1, …), 310 product×package rows across 48 product lines (Container suse/sl-micro/6.0/baremetal-os-container, Container suse/sl-micro/6.0/base-os-container, … (48 product lines)): Known Affected 231, Fixed 79. | https://www.suse.com/security/cve/CVE-2013-0340/ |
ubuntu
|
medium | CVE-2013-0340 medium priority: Ubuntu including 40 source packages (apache2, apr-util, …), 280 status rows across 7 suites (hardy, lucid, oneiric, precise, quantal, raring, upstream): ignored 224, DNE 55, released 1. | https://ubuntu.com/security/CVE-2013-0340 |
| 廠商 | 產品 | 版本 | 原始 CPE |
|---|---|---|---|
| libexpat_project | libexpat | < 2.4.0 | cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:* |
| python | python | >= 3.6.0, < 3.6.15 | cpe:2.3:a:python:python:*:*:*:*:*:*:*:* |
| python | python | >= 3.7.0, < 3.7.12 | cpe:2.3:a:python:python:*:*:*:*:*:*:*:* |
| python | python | >= 3.8.0, < 3.8.12 | cpe:2.3:a:python:python:*:*:*:*:*:*:*:* |
| python | python | >= 3.9.0, < 3.9.7 | cpe:2.3:a:python:python:*:*:*:*:*:*:*:* |
| apple | ipados | < 14.8 | cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* |
| apple | iphone_os | < 14.8 | cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* |
| apple | macos | < 11.6 | cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* |
| apple | tvos | < 15.0 | cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* |
| apple | watchos | < 8.0 | cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* |