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TI-2011-01532 Aliases CVE-2011-1753GHSA-35cw-298h-r635

expat_erl.c in ejabberd before 2.1.7 and 3.x before 3.0.0-alpha-3, and exmpp before…

Priority LOW 27CWE-399Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Partial
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.02125 82nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 34

CPEVersionsRoleVendor
cpe:2.3:a:process-one:ejabberd:*:*:*:*:*:*:*:*up to 2.1.6VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:0.9:*:*:*:*:*:*:*0.9VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:0.9.1:*:*:*:*:*:*:*0.9.1VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:0.9.8:*:*:*:*:*:*:*0.9.8VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:1.0.0:*:*:*:*:*:*:*1.0.0VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:1.1.0:*:*:*:*:*:*:*1.1.0VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:1.1.1:*:*:*:*:*:*:*1.1.1VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:1.1.1.0:*:*:*:*:*:*:*1.1.1.0VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:1.1.1.1:*:*:*:*:*:*:*1.1.1.1VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:1.1.2:*:*:*:*:*:*:*1.1.2VulnerableProcessOne
  • cpe:2.3:a:process-one:ejabberd:*:*:*:*:*:*:*:* Versions up to 2.1.6 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:0.9:*:*:*:*:*:*:* Versions 0.9 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:0.9.1:*:*:*:*:*:*:* Versions 0.9.1 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:0.9.8:*:*:*:*:*:*:* Versions 0.9.8 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:1.0.0:*:*:*:*:*:*:* Versions 1.0.0 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:1.1.0:*:*:*:*:*:*:* Versions 1.1.0 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:1.1.1:*:*:*:*:*:*:* Versions 1.1.1 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:1.1.1.0:*:*:*:*:*:*:* Versions 1.1.1.0 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:1.1.1.1:*:*:*:*:*:*:* Versions 1.1.1.1 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:1.1.2:*:*:*:*:*:*:* Versions 1.1.2 Vulnerable ·ProcessOne
Show 24 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:process-one:ejabberd:1.1.3:*:*:*:*:*:*:*1.1.3VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:1.1.14:*:*:*:*:*:*:*1.1.14VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:2.0.0:*:*:*:*:*:*:*2.0.0VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:2.0.0:beta1:*:*:*:*:*:*2.0.0 beta1VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:2.0.0:rc1:*:*:*:*:*:*2.0.0 rc1VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:2.0.1_2:*:*:*:*:*:*:*2.0.1_2VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:2.0.2:*:*:*:*:*:*:*2.0.2VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:2.0.3:*:*:*:*:*:*:*2.0.3VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:2.0.4:*:*:*:*:*:*:*2.0.4VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:2.0.5:*:*:*:*:*:*:*2.0.5VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:2.1.0:*:*:*:*:*:*:*2.1.0VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:2.1.1:*:*:*:*:*:*:*2.1.1VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:2.1.2:*:*:*:*:*:*:*2.1.2VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:2.1.3:*:*:*:*:*:*:*2.1.3VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:2.1.4:*:*:*:*:*:*:*2.1.4VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:2.1.5:*:*:*:*:*:*:*2.1.5VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:3.0.0:alpha1:*:*:*:*:*:*3.0.0 alpha1VulnerableProcessOne
cpe:2.3:a:process-one:ejabberd:3.0.0:alpha2:*:*:*:*:*:*3.0.0 alpha2VulnerableProcessOne
cpe:2.3:a:process-one:exmpp:*:*:*:*:*:*:*:*up to 0.9.6VulnerableProcessOne
cpe:2.3:a:process-one:exmpp:0.9.1:*:*:*:*:*:*:*0.9.1VulnerableProcessOne
cpe:2.3:a:process-one:exmpp:0.9.2:*:*:*:*:*:*:*0.9.2VulnerableProcessOne
cpe:2.3:a:process-one:exmpp:0.9.3:*:*:*:*:*:*:*0.9.3VulnerableProcessOne
cpe:2.3:a:process-one:exmpp:0.9.4:*:*:*:*:*:*:*0.9.4VulnerableProcessOne
cpe:2.3:a:process-one:exmpp:0.9.5:*:*:*:*:*:*:*0.9.5VulnerableProcessOne
  • cpe:2.3:a:process-one:ejabberd:1.1.3:*:*:*:*:*:*:* Versions 1.1.3 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:1.1.14:*:*:*:*:*:*:* Versions 1.1.14 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:2.0.0:*:*:*:*:*:*:* Versions 2.0.0 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:2.0.0:beta1:*:*:*:*:*:* Versions 2.0.0 beta1 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:2.0.0:rc1:*:*:*:*:*:* Versions 2.0.0 rc1 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:2.0.1_2:*:*:*:*:*:*:* Versions 2.0.1_2 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:2.0.2:*:*:*:*:*:*:* Versions 2.0.2 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:2.0.3:*:*:*:*:*:*:* Versions 2.0.3 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:2.0.4:*:*:*:*:*:*:* Versions 2.0.4 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:2.0.5:*:*:*:*:*:*:* Versions 2.0.5 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:2.1.0:*:*:*:*:*:*:* Versions 2.1.0 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:2.1.1:*:*:*:*:*:*:* Versions 2.1.1 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:2.1.2:*:*:*:*:*:*:* Versions 2.1.2 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:2.1.3:*:*:*:*:*:*:* Versions 2.1.3 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:2.1.4:*:*:*:*:*:*:* Versions 2.1.4 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:2.1.5:*:*:*:*:*:*:* Versions 2.1.5 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:3.0.0:alpha1:*:*:*:*:*:* Versions 3.0.0 alpha1 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:ejabberd:3.0.0:alpha2:*:*:*:*:*:* Versions 3.0.0 alpha2 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:exmpp:*:*:*:*:*:*:*:* Versions up to 0.9.6 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:exmpp:0.9.1:*:*:*:*:*:*:* Versions 0.9.1 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:exmpp:0.9.2:*:*:*:*:*:*:* Versions 0.9.2 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:exmpp:0.9.3:*:*:*:*:*:*:* Versions 0.9.3 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:exmpp:0.9.4:*:*:*:*:*:*:* Versions 0.9.4 Vulnerable ·ProcessOne
  • cpe:2.3:a:process-one:exmpp:0.9.5:*:*:*:*:*:*:* Versions 0.9.5 Vulnerable ·ProcessOne

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2011-1753
  2. 2026-10-03 Alias added: GHSA-35cw-298h-r635

References

Patch 2

Advisory 3

Other 2

  • TI-2007-00879 Unspecified vulnerability in the mod_roster_odbc module in ejabberd before 1.1.3 has unknown impact and attack vectors. CVSS 2.0HIGH 10.0
  • TI-2010-00292 ejabberd_c2s.erl in ejabberd before 2.1.3 allows remote attackers to cause a denial of… CVSS 2.0MEDIUM 5.0
  • TI-2014-07188 ejabberd before 2.1.13 does not enforce the starttls_required setting when compression is… CVSS 2.0MEDIUM 5.0
  • TI-2013-05190 The TLS driver in ejabberd before 2.1.12 supports (1) SSLv2 and (2) weak SSL ciphers… CVSS 2.0MEDIUM 4.3
  • TI-2011-03787 The mod_pubsub module (mod_pubsub.erl) in ejabberd 2.1.8 and 3.0.0-alpha-3 allows remote… CVSS 2.0MEDIUM 4.0
  • TI-2009-00888 Cross-site scripting (XSS) vulnerability in ejabberd before 2.0.4 allows remote attackers… CVSS 2.0MEDIUM 4.3
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences