libxml2 関連製品全体の CVE とセキュリティ脆弱性情報を集約し、CVSS、EPSS、公開日、脆弱性情報データを掲載しています。
過去の問題は主に vendor risk xxe and vendor risk input validation などに関し、一部は vendor impact unexpected behavior を招き、vendor surface software deployment and vendor surface production workloads 関連の場面に影響します。
掲載データは公開脆弱性情報とセキュリティ公告に基づき、過去の暴露面と修補優先度の評価に利用できます。
| CVE | 概要 | ソース | CVSS 最大値 | EPSS（%） | 公開 | 更新 |
|---|---|---|---|---|---|---|
| CVE-2024-25062 | An issue was discovered in libxml2 before 2.11.7 and 2.12.x before 2.12.5. When using the XML Reader interface with DTD validation and XInclude expansion enabled, processing crafted XML documents can lead to an xmlValidatePopElement use-after-free. | [email protected] | 7.5 | 1.38% | 2024-02-04 | 2026-06-17 |
| CVE-2023-45322 | libxml2 through 2.11.5 has a use-after-free that can only occur after a certain memory allocation fails. This occurs in xmlUnlinkNode in tree.c. NOTE: the vendor's position is "I don't think these issues are critical enough to warrant a CVE ID ... because an attacker typically can't control when memory allocations fail." | [email protected] | 6.5 | 0.83% | 2023-10-06 | 2026-06-17 |
| CVE-2023-39615 | Xmlsoft Libxml2 v2.11.0 was discovered to contain an out-of-bounds read via the xmlSAX2StartElement() function at /libxml2/SAX2.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via supplying a crafted XML file. NOTE: the vendor's position is that the product does not support the legacy SAX1 interface with custom callbacks; there is a crash even without crafted input. | [email protected] | 6.5 | 0.67% | 2023-08-29 | 2026-06-17 |
| CVE-2023-29469 | An issue was discovered in libxml2 before 2.10.4. When hashing empty dict strings in a crafted XML document, xmlDictComputeFastKey in dict.c can produce non-deterministic values, leading to various logic and memory errors, such as a double free. This behavior occurs because there is an attempt to use the first byte of an empty string, and any value is possible (not solely the '\0' value). | [email protected] | 6.5 | 1.01% | 2023-04-24 | 2026-06-17 |
| CVE-2023-28484 | In libxml2 before 2.10.4, parsing of certain invalid XSD schemas can lead to a NULL pointer dereference and subsequently a segfault. This occurs in xmlSchemaFixupComplexType in xmlschemas.c. | [email protected] | 6.5 | 1.09% | 2023-04-24 | 2026-06-17 |
| CVE-2022-40304 | An issue was discovered in libxml2 before 2.10.3. Certain invalid XML entity definitions can corrupt a hash table key, potentially leading to subsequent logic errors. In one case, a double-free can be provoked. | [email protected] | 7.8 | 6.84% | 2022-11-23 | 2026-06-17 |
| CVE-2022-40303 | An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the XML_PARSE_HUGE parser option enabled, several integer counters can overflow. This results in an attempt to access an array at a negative 2GB offset, typically leading to a segmentation fault. | [email protected] | 7.5 | 22.79% | 2022-11-22 | 2026-06-17 |
| CVE-2016-3709 | Possible cross-site scripting vulnerability in libxml after commit 960f0e2. | [email protected] | 6.1 | 0.76% | 2022-07-28 | 2026-06-16 |
| CVE-2022-29824 | In libxml2 before 2.9.14, several buffer handling functions in buf.c (xmlBuf*) and tree.c (xmlBuffer*) don't check for integer overflows. This can result in out-of-bounds memory writes. Exploitation requires a victim to open a crafted, multi-gigabyte XML file. Other software using libxml2's buffer functions, for example libxslt through 1.1.35, is affected as well. | [email protected] | 6.5 | 3.63% | 2022-05-02 | 2026-06-17 |
| CVE-2022-23308 | valid.c in libxml2 before 2.9.13 has a use-after-free of ID and IDREF attributes. | [email protected] | 7.5 | 6.01% | 2022-02-26 | 2026-06-17 |
| CVE-2021-30560 | Use after free in Blink XSLT in Google Chrome prior to 91.0.4472.164 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. | [email protected] | 8.8 | 21.62% | 2021-08-03 | 2026-06-16 |
| CVE-2021-3541 | A flaw was found in libxml2. Exponential entity expansion attack its possible bypassing all existing protection mechanisms and leading to denial of service. | [email protected] | 6.5 | 1.86% | 2021-07-09 | 2026-06-17 |
| CVE-2021-3516 | There's a flaw in libxml2's xmllint in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by xmllint could trigger a use-after-free. The greatest impact of this flaw is to confidentiality, integrity, and availability. | [email protected] | 7.8 | 1.99% | 2021-06-01 | 2026-06-17 |
| CVE-2021-3517 | There is a flaw in the xml entity encoding functionality of libxml2 in versions before 2.9.11. An attacker who is able to supply a crafted file to be processed by an application linked with the affected functionality of libxml2 could trigger an out-of-bounds read. The most likely impact of this flaw is to application availability, with some potential impact to confidentiality and integrity if an attacker is able to use memory information to further exploit the application. | [email protected] | 8.6 | 8.28% | 2021-05-19 | 2026-06-17 |
| CVE-2021-3518 | There's a flaw in libxml2 in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by an application linked with libxml2 could trigger a use-after-free. The greatest impact from this flaw is to confidentiality, integrity, and availability. | [email protected] | 8.8 | 3.65% | 2021-05-18 | 2026-06-17 |
| CVE-2021-3537 | A vulnerability found in libxml2 in versions before 2.9.11 shows that it did not propagate errors while parsing XML mixed content, causing a NULL dereference. If an untrusted XML document was parsed in recovery mode and post-validated, the flaw could be used to crash the application. The highest threat from this vulnerability is to system availability. | [email protected] | 5.9 | 3.50% | 2021-05-14 | 2026-06-17 |
| CVE-2020-24977 | GNOME project libxml2 v2.9.10 has a global buffer over-read vulnerability in xmlEncodeEntitiesInternal at libxml2/entities.c. The issue has been fixed in commit 50f06b3e. | [email protected] | 6.5 | 3.67% | 2020-09-03 | 2026-06-16 |
| CVE-2020-7595 | xmlStringLenDecodeEntities in parser.c in libxml2 2.9.10 has an infinite loop in a certain end-of-file situation. | [email protected] | 7.5 | 7.84% | 2020-01-21 | 2026-06-16 |
| CVE-2019-20388 | xmlSchemaPreRun in xmlschemas.c in libxml2 2.9.10 allows an xmlSchemaValidateStream memory leak. | [email protected] | 7.5 | 4.39% | 2020-01-21 | 2026-06-16 |
| CVE-2019-19956 | xmlParseBalancedChunkMemoryRecover in parser.c in libxml2 before 2.9.10 has a memory leak related to newDoc->oldNs. | [email protected] | 7.5 | 5.51% | 2019-12-24 | 2026-06-16 |