expat_erl.c in ejabberd before 2.1.7 and 3.x before 3.0.0-alpha-3, and exmpp before 0.9.7, does not properly detect recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, a similar issue to CVE-2003-1564
Published Jun 21, 2011
5.0
MEDIUMCVSS 2.0
EPSS 2.13%
Description
expat_erl.c in ejabberd before 2.1.7 and 3.x before 3.0.0-alpha-3, and exmpp before 0.9.7, does not properly detect recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, a similar issue to CVE-2003-1564.
Affected products
No data.
Configuration 1
- ≤ 2.1.6
- 0.9
- 0.9.1
- 0.9.8
- 1.0.0
- 1.1.0
- 1.1.1
- 1.1.1.0
- 1.1.1.1
- 1.1.2
- 1.1.3
- 1.1.14
- 2.0.0
- 2.0.0
- 2.0.0
- 2.0.1_2
- 2.0.2
- 2.0.3
- 2.0.4
- 2.0.5
- 2.1.0
- 2.1.1
- 2.1.2
- 2.1.3
- 2.1.4
- 2.1.5
- 3.0.0
- 3.0.0
Configuration 2
- ≤ 0.9.6
- 0.9.1
- 0.9.2
- 0.9.3
- 0.9.4
- 0.9.5
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (8 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.13% (0.02125) | 81.24th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.13% (0.02125) | 79.45th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.94% (0.01937) | 82.19th | v4 (v2025.03.14) |
| Dec 12, 2024 | 6.13% (0.06128) | 93.81th | v3 (v2023.03.01) |
| Mar 7, 2023 | 6.13% (0.06128) | 92.37th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
References (12)
- http://lists.fedoraproject.org/pipermail/package-announce/2011-June/062099.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2011-June/062145.html vendor-advisoryx_refsource_FEDORA
- http://secunia.com/advisories/44765 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/44807 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/45120 third-party-advisoryx_refsource_SECUNIA
- http://www.debian.org/security/2011/dsa-2248 vendor-advisoryx_refsource_DEBIAN
- http://www.ejabberd.im/ejabberd-2.1.7 x_refsource_CONFIRMPatch
- http://www.process-one.net/en/ejabberd/release_notes/release_note_ejabberd_2.1.7/ x_refsource_CONFIRM
- http://www.securityfocus.com/bid/48072 vdb-entryx_refsource_BID
- https://bugzilla.redhat.com/show_bug.cgi?id=700454 x_refsource_CONFIRM
- https://exchange.xforce.ibmcloud.com/vulnerabilities/67769 vdb-entryx_refsource_XF
- https://git.process-one.net/ejabberd/mainline/commit/bd1df027c622e1f96f9eeaac612a6a956c1ff0b6 x_refsource_CONFIRMPatch
Change history (0)
No recorded changes yet.