CVE-2015-7686
Algorithmic complexity vulnerability in Address.pm in the Email-Address module 1.908 and earlier...
Algorithmic complexity vulnerability in Address.pm in the Email-Address module 1.908 and earlier for Perl allows remote attackers to cause a denial of service (CPU consumption) via a crafted string containing a list of e-mail addresses in conjunction with parenthesis characters that can be associated with nested comments. NOTE: the default configuration in 1.908 mitigates this vulnerability but misparses certain realistic comments.
Exploit likelihood
What each source reports
NVD Score used
Algorithmic complexity vulnerability in Address.pm in the Email-Address module 1.908 and earlier for Perl allows remote attackers to cause a denial of service (CPU consumption) via a crafted string containing a list of e-mail addresses in conjunction with parenthesis characters that can be associated with nested comments. NOTE: the default configuration in 1.908 mitigates this vulnerability but misparses certain realistic comments.
- Record
CVE-2015-7686- CVSS 2.0
- 7.8 High
AV:N/AC:L/Au:N/C:N/I:N/A:C - Weakness
- CWE-20, CWE-399
- Updated
- 2026-11-02
CVE List No score
Algorithmic complexity vulnerability in Address.pm in the Email-Address module 1.908 and earlier for Perl allows remote attackers to cause a denial of service (CPU consumption) via a crafted string containing a list of e-mail addresses in conjunction with parenthesis characters that can be associated with nested comments. NOTE: the default configuration in 1.908 mitigates this vulnerability but misparses certain realistic comments.
- Record
CVE-2015-7686- Updated
- 2026-11-02
EUVDEUVD-2015-7588 No score
Algorithmic complexity vulnerability in Address.pm in the Email-Address module 1.908 and earlier for Perl allows remote attackers to cause a denial of service (CPU consumption) via a crafted string containing a list of e-mail addresses in conjunction with parenthesis characters that can be associated with nested comments. NOTE: the default configuration in 1.908 mitigates this vulnerability but misparses certain realistic comments.
- Record
EUVD-2015-7588- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-24jp-cwv2-qjwh No score
Algorithmic complexity vulnerability in Address.pm in the Email-Address module 1.908 and earlier...
Algorithmic complexity vulnerability in Address.pm in the Email-Address module 1.908 and earlier for Perl allows remote attackers to cause a denial of service (CPU consumption) via a crafted string containing a list of e-mail addresses in conjunction with parenthesis characters that can be associated with nested comments. NOTE: the default configuration in 1.908 mitigates this vulnerability but misparses certain realistic comments.
- Record
GHSA-24jp-cwv2-qjwh- Weakness
- CWE-20
- Updated
- 2026-11-02
OSV No score
Algorithmic complexity vulnerability in Address.pm in the Email-Address module 1.908 and earlier for Perl allows remote attackers to cause a denial of service (CPU consumption) via a crafted string containing a list of e-mail addresses in conjunction with parenthesis characters that can be associated with nested comments. NOTE: the default configuration in 1.908 mitigates this vulnerability but misparses certain realistic comments.
- Record
CVE-2015-7686- Updated
- 2026-11-02
OSVDEBIAN-CVE-2015-7686 No score
Algorithmic complexity vulnerability in Address.pm in the Email-Address module 1.908 and earlier for Perl allows remote attackers to cause a denial of service (CPU consumption) via a crafted string containing a list of e-mail addresses in conjunction with parenthesis characters that can be associated with nested comments. NOTE: the default configuration in 1.908 mitigates this vulnerability but misparses certain realistic comments.
- Record
DEBIAN-CVE-2015-7686- Updated
- 2026-11-02
OSVMGASA-2016-0397 No score
Updated perl-Email-Address packages fix security vulnerability
Pali Rohár discovered a possible DoS attack in any software which uses the Email::Address Perl module for parsing string input to a list of email addresses.
Note that this issue has only been partially mitigated in Email::Address itself.
- Record
MGASA-2016-0397- Updated
- 2026-11-02
OSVUBUNTU-CVE-2015-7686 No score
Algorithmic complexity vulnerability in Address.pm in the Email-Address module 1.908 and earlier for Perl allows remote attackers to cause a denial of service (CPU consumption) via a crafted string containing a list of e-mail addresses in conjunction with parenthesis characters that can be associated with nested comments. NOTE: the default configuration in 1.908 mitigates this vulnerability but misparses certain realistic comments.
- Record
UBUNTU-CVE-2015-7686- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
libemail-address-perlDebian:12 |
before 1.912-1 | 1.912-1 |
libemail-address-perlDebian:13 |
before 1.912-1 | 1.912-1 |
libemail-address-perlDebian:14 |
before 1.912-1 | 1.912-1 |
perl-Email-AddressMageia:5 |
before 1.908.0-1.mga5 | 1.908.0-1.mga5 |
libemail-address-perlUbuntu:16.04:LTS |
All versions, plus listed versions 1.905-21.908-1 |
None known |
libemail-address-perlUbuntu:18.04:LTS |
All versions, plus listed versions 1.908-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2015-7686 is a high vulnerability (CVSS 7.8) in Email-address Project Email-address, published October 3, 2015. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.54%, the 89th percentile. Fixed in libemail-address-perl 1.912-1.