CVE-2017-20230
Storable versions before 3.05 for Perl has a stack overflow.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.64%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Storable versions before 3.05 for Perl has a stack overflow. The retrieve_hook function stored the length of the class name into a signed integer but in read operations treated the length as unsigned. This allowed an attacker to craft data that could trigger the overflow.
- CVSS 3.1
- 10.0 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 0.64% probability · 51th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-121
- Affected
- nwclark/storable
- Source
- 9b29abf9-4ab0-4765-b253-1875cd9b441e
EPSS 0.6% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/Perl/perl5/commit/a258c17c6937f79529c8319a829310e09cdbd216.patchPatch
- https://github.com/Perl/perl5/issues/15831Issue Tracking
- https://metacpan.org/release/RURBAN/Storable-3.05/changesRelease Notes
- https://www.nntp.perl.org/group/perl.perl5.porters/2017/01/msg242533.htmlThird Party Advisory
- https://www.nntp.perl.org/group/perl.perl5.porters/2017/01/msg242703.htmlThird Party Advisory
- http://www.openwall.com/lists/oss-security/2026/04/21/5Mailing List
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.