Sandstorm Cap'n Proto before 0.4.1.1 and 0.5.x before 0.5.1.2, when an application invokes the totalSize method on an object reader, allows remote peers to cause a denial of service (CPU consumption) via a crafted small message, which triggers a "tight" for loop. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-2312.
CVE-2015-2313
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-17. NVD baseline CVSS 7.5; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EG Risk
- 39(Track)EG Risk 39/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation2% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 2%
- EPSS %ILE
- 77%
- KEV
- Not listed
Published
August 9, 2017
Last Modified
June 17, 2026
References (8)
- security@debianhttp://www.openwall.com/lists/oss-security/2015/03/17/3
- security@debianhttps://bugs.debian.org/cgi-bin/bugreport.cgi?bug=780568
- security@debianhttps://github.com/capnproto/capnproto/blob/master/security-advisories/2015-03-05-0-c%2B%2B-addl-cpu-amplification.md
- security@debianhttps://github.com/capnproto/capnproto/commit/80149744bdafa3ad4eedc83f8ab675e27baee868
- af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2015/03/17/3
- af854a3a-2127-422b-91ae-364da2661108https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=780568
- af854a3a-2127-422b-91ae-364da2661108https://github.com/capnproto/capnproto/blob/master/security-advisories/2015-03-05-0-c%2B%2B-addl-cpu-amplification.md
- af854a3a-2127-422b-91ae-364da2661108https://github.com/capnproto/capnproto/commit/80149744bdafa3ad4eedc83f8ab675e27baee868
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 10× in last 7d / 39× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 103 total refreshes for this CVE.
- 2026-07-26 14:50 UTCEPSS rescore
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Related CVEs(same CWE)
Same CWE
10 shownCWE-400
Frequently asked(5)
What is CVE-2015-2313?
When was CVE-2015-2313 disclosed?
Is CVE-2015-2313 actively exploited?
What is the CVSS score of CVE-2015-2313?
How do I remediate CVE-2015-2313?
Dependency Blast Radius
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